MongoDB Arrangement Of Embedded Array Documents
1. About index 1] Index array Suppose there is a collection of blog posts, where each document represents an article. Each post has a "comments" field, which is an array
1. About index 1] Index array Suppose there is a collection of blog posts, where each document represents an article. Each post has a "comments" field, which is an array
Editor: Du Yu According to CCTV News, on February 20, local time, the U.S. Supreme Court ruled that the relevant large-scale tariff measures implemented by the Trump administration in accordance with the International Emergency Economic Powers Act lacked clear legal authorization. that day
For web browsers, the several changes in button controls are a familiar mechanism: Normal, Hover and Archive are the three effects that are most easily felt when browsing with a mouse.

On February 6, 2026, the European Commission led by von der Leyen suddenly issued a final announcement. Without advance warning and without room for negotiation, it directly imposed a 79.0% anti-dumping tax on ceramic tableware and kitchenware originating in China. The announcement officially came into effect the next day.
Huang Jingyu's "Times Are Loved" premiered for 4 episodes, and the popularity exceeded 6,000. The audience's evaluation was surprisingly consistent.
Shi Jingtang and Feng Dao, Feng Dao, Later Tang Dynasty, Gao Zu, Shi Jingtang

Mobile payment does not require carrying cash and is easy to change, making it more convenient; the electronic payment platform has multiple security measures, which is safer than cash, but there is a risk of being stolen when carrying cash out; cash can easily carry bacteria in circulation, and electronic payment is more hygienic; in addition

What is Tether (USDT)? Tether is a cryptocurrency pegged to fiat currencies (such as the US dollar) and belongs to the stablecoin category. It is said that each USDT is backed by 1 US dollar or equivalent assets.

He shouted "defeat American imperialism", but in his later years he immigrated to the United States with his family. In 2003, Ms. Yao Man, who claimed to be Jiang Dawei's agent, held an IOU with a face value of 900,000 yuan and publicly accused Jiang Dawei of not repaying his debts.

In previous years during the Spring Festival, the most discussed topic was "which movie to watch during the Spring Festival". This year there is an additional question - "which theater to watch it in". On the morning of New Year's Day, the first batch of viewers who walked into Wanda Cinema discovered that before the movie started
On the evening of March 6, Liu Qingfeng, deputy to the National People's Congress and chairman of iFlytek, was interviewed by the media at the Anhui News Center of the 2026 National Two Sessions in Beijing.
Talking about the way for China's large-scale model companies to break through against the background of increasingly fierce global artificial intelligence competition and facing multiple challenges from technical limitations and industrial dimensions, Liu Qingfeng said that the key lies in achieving full-stack independent controllability from algorithms, data to application scenarios.

Liu Qingfeng, deputy to the National People's Congress and chairman of iFlytek. Picture/Jiupai News
He pointed out that many models are currently trained based on foreign computing power and do adaptation and inference research on domestic computing power. This model still has security risks at the autonomous and controllable level. "A truly autonomous and controllable model should be trained on one's own computing power. Only after training on one's own computing power can a more complete autonomous ecosystem be formed. I think our safe future is guaranteed."
In his view, domestic computing power training has made continuous progress in the past year. "Although Spark is still the only mainstream model for domestic computing power training today, more and more special models and model manufacturers have begun to adapt artificial intelligence to domestic computing power, and have also begun to enter the training of base models."
Based on these developments, he showed firm confidence: "China's own computing power continues to develop, algorithms continue to adapt, and we are making our own innovations. Coupled with our rich application scenarios and the advantages of software and hardware integration, China's artificial intelligence can not only achieve independent controllability during the '15th Five-Year Plan', but also has a very broad future."
Jiupai News special correspondent Li Kai and Yan Huayang reported from Beijing
Editor Xiao Jie Ren Zhuo
China Jiangxi Net News (Reporter Chen Zhang) The modern logistics industry is an important pillar of our province’s modern service industry and one of the outstanding shortcomings in economic and social development. Recently, our province formulated the "Jiangxi Province Promotes the Implementation of "Internet +" Efficient Logistics Work Plan", striving to achieve more than 50% of the application rate of advanced information technology in the logistics field by 2020, and the added value of the logistics industry generated by new logistics technologies, new models, and new formats based on the Internet will account for about 40% of the added value of the entire industry.
The "Plan" points out that it is necessary to improve and improve the provincial logistics public information platform, promote the construction of provincial comprehensive transportation information interconnection and exchange nodes, and establish railway, waterway, highway, aviation, postal and other logistics information exchange nodes in the province's key first- and second-level railway logistics bases, Nanchang Port Longtougang Comprehensive Hub, Jiujiang Port Hongguang Hub and other important water transport hubs, Nanchang Changbei International Airport, Ganzhou Golden Airport and other major airports, and large comprehensive logistics parks.
In terms of smart logistics, promote new models of instant delivery. Promote the coordinated development of e-commerce and logistics, promote community terminal distribution models such as "order online and pick up in stores" and "smart pickup cabinets", and accelerate the construction of e-commerce logistics systems such as express logistics parks, parcel sorting centers, and terminal distribution outlets to achieve same-day orders and next-day delivery. At the same time, we will study and improve the "car-free carrier" management system, and encourage and guide well-known enterprises in the industry such as Provincial State-controlled Logistics Company, Wanji Logistics Company, and Zhengguangtong Supply Chain Management Company to carry out "car-free carrier" pilot work.
Regarding the creation of logistics outlets, our province will plan to layout 1 first-level logistics base, 6 second-level logistics bases, and 10 third-level logistics bases. Based on the third-level railway logistics base network, we will build logistics operation stations, acceptance stations, acceptance points and trackless stations as needed to create a distinct layered railway logistics park network. In addition, our province will also support the provincial state-controlled logistics company to initiate the establishment of the Jiangxi "Internet +" Logistics Enterprise Alliance by means of a modern information platform, guide and encourage logistics enterprises in the province to join the logistics alliance, and form a Jiangxi logistics backbone network as soon as possible.
1. The meanings of “collect” and “collect” are respectively:
1. "Collect": Search, collect (Gather), collect data from all processes in the group to one process/find everywhere (things are gathered together).
2. "Collect": to recruit and gather; to collect, collect and bring together scattered things.
2. Difference:
1. Compared with collecting, collecting has certain selectivity and directionality.
2. Collect means to look for things and then gather them together. Collect means to gather things directly without searching.
For example, "collecting stamps" may mean that there is a certain stamp on the market, and you just go and buy it; while "collecting stamps" means that a certain rare stamp is not available on the market, and you need to search and buy it. You can even think of collection = search + collection.
3. Different pinyin:
collect (sōu jí)
collect (shōu jí)
4. Antonyms:
Antonyms for collection: distribution;
Antonyms for collection: scatter, distribute;
5. Basic meaning:
Collect: search, collect;
Gather: to gather together;
6. English translation:
Collect: collect gather;
Collect: to collect, to get together, to gather, to glean;
Extended information:
collect:
1. Recruitment gathering.
"Book of the Later Han·Biography of Zhang Huan": "Huan didn't listen, so he marched to the Great Wall and gathered soldiers." (Zhang Huan didn't listen, so he marched to the Great Wall and gathered soldiers.)
2. Collect, collect, and put together scattered things.
Qin Mu's "Flower City: Collecting Shells on the Beach": "There are some 'shell fans' who specialize in collecting shells."
collect:
1. Search collection.
Qing Dynasty Shen Fu's "Six Notes of a Fusheng·Boujingjile": "Books that are incomplete and incomplete must be collected into separate categories and compiled into volumes, collectively called 'broken slips and residual editions'." (Books that are incomplete and incomplete must be collected into separate categories and compiled into volumes, collectively known as 'broken slips and residual editions'.)
Tian Beihu's "On the Origin of Articles": "Collecting ballads and proverbs will reveal the origin of "Erya"; including summer and winter, it is the secret key of the word." (Collecting ballads and proverbs will reveal the origin of "Erya"; including summer and winter, then the secret key of these words.)
Ba Jin's "Autumn" 2: "We have already divided the calligraphy and paintings that Dad worked so hard to collect."
2. Collect: Collect.
"Preface" by Zeng Guofan of the Qing Dynasty: "There are very few articles that are based on textual research. The advocacy of previous philosophers is not ambitious, and the admiration of later generations is also small." (The articles that are only based on evidence are very few, the advocacy of previous philosophers is not ambitious, and the admiration of later generations is also small.)
Reference: Baidu Encyclopedia-Collect
Baidu Encyclopedia-Collection
Hexun Finance APP is a financial information service platform software that can help investors find good investment opportunities. Hosted by Hexun.com, a subsidiary of Lianban Group, it has been committed to becoming the most professional financial news software and trading tool in China for 29 years in the professional financial field. Covering all financial information services such as stocks, futures, gold, funds, automobiles, insurance, technology, consumption, financial management, banks, and listed companies. The featured channels are introduced as follows: [News Channel] provides 24/7 authoritative information at home and abroad, tracks the latest economic policy trends, and provides in-depth analysis of the broad financial perspective. Provide users with real-time professional and comprehensive financial news, event reports and in-depth financial analysis, covering macroeconomics, financial markets, business dynamics, industrial economy, listed companies, investment and financial management and other financial fields. [Stock Channel] focuses on China's capital market, focusing on securities companies, regulators, listed companies, investors, etc., to produce securities market information content, and to provide content services for market value management and improving the investability of listed companies. [Banking Channel] comprehensively and timely delivers banking industry news, provides in-depth interpretations of industry policies, and is committed to providing readers with practical industry information, products and services. [Insurance Channel] Browse insurance products and insurance information in one stop. It is committed to providing users with comprehensive and in-depth insurance industry news, market trends, product reviews and the popularization of professional insurance knowledge. [Fund Channel] provides professional, timely and comprehensive fund information and creates a gathering place for top fund managers. It gathers the latest fund news, fund announcements, fund ratings, and comprehensive and detailed fund market data; it also covers market reviews and research reports on the latest fund products, making it a caring fund investment expert for users. [Futures Channel] provides professional, comprehensive and accurate 7X24-hour futures information and futures prices, covering futures knowledge, domestic and foreign futures varieties, futures quotes, futures operation skills, futures reviews, etc., to help investors seize investment opportunities in the futures market. [Financial Management Channel] Focuses on financial management products, financial investment, financial planning and financial tools, etc., it provides financial information, integrates the essence of various financial projects and financial investment methods, leads the trend of scientific financial life, and opens the door to wealth for personal financial managers. [Consumption Channel] Continue to pay attention to cutting-edge industry information in the fields of consumption, high-end manufacturing, real estate, entrepreneurship and other fields, report on well-known domestic and foreign companies and brands, and establish influence on well-known companies. [Technology Channel] focuses on TMT, big data, artificial intelligence and other hot topics, focusing on "technology" and "people", through in-depth industry observation and forward-looking reporting, to present the latest trends in the technology industry to users, while paying attention to technology-related business trends. [Auto Channel] provides industry news from a financial perspective, easy-to-understand new car reviews, and a small amount of car gossip. Focus on the development status and future trends of the automobile industry, timely interpret policy-related information, report on various new car products, pay attention to user experience, and report on various events in the automobile field from multiple channels and angles. [Hexun Financial Research Institute] is backed by SEEC, the most authoritative research institution in China's capital market, and the Joint Group, an important promoter of China's economic reform. Relying on Hexun.com, an Internet financial service provider with a history of 28 years, it gathers 200+ top professional scholars in the financial field, 100+ million fan opinion leaders, and 50+ economic policy think tanks. [Hexun desktop website] www.hexun.com [Hexun mobile website] m.hexun.com [Official Weibo] Hexun.com [Customer service email] mobile@staff.hexun.com
On March 7, the State Council Information Office held a briefing to interpret the "Outline (Draft)" of the "15th Five-Year Plan".

Briefing session on site. Picture/Guoxin.com
Chen Lei, director of the Development Strategy and Planning Department of the National Development and Reform Commission, said that infrastructure is an important support for economic and social development. To implement the requirements of the Party Central Committee's "Recommendations", the "Outline (Draft)" of the "15th Five-Year Plan" has a dedicated chapter on "building a modern infrastructure system", which includes not only transportation, water conservancy, energy and other infrastructure, but also major scientific and technological infrastructure, information and communication networks, computing power networks and other new infrastructure. The general direction is to strengthen overall planning, optimize layout structure, promote integration and integration, while improving safety resilience and operational sustainability. Viewed by field:
In terms of transportation. During the "15th Five-Year Plan" period, we will improve the modern comprehensive transportation system, basically build the "eight vertical and eight horizontal" high-speed railway main corridors and the national highway network, promote the upgrading of high-grade inland waterways, basically build a world-class port group and airport group, and implement a number of major engineering projects such as connecting high-standard high-speed rail channels along the river, building new Three Gorges water transportation channels, and promoting highway safety and resilience improvements. At the same time, we will strengthen the coverage and accessibility of weak areas and promote the renewal, renovation, maintenance and management of transportation infrastructure.
In terms of energy. We will focus on building a clean, low-carbon, safe and efficient new energy system, adhere to the simultaneous development of wind, solar, water, nuclear and other energy sources, implement the ten-year doubling action of non-fossil energy, and promote the safe, reliable and orderly replacement of fossil energy by non-fossil energy. During the "15th Five-Year Plan" period, through the implementation of a number of major engineering projects such as Yaxia Hydropower, "Shagohuang" new energy base, and power transmission channels, the west-to-east electricity transmission capacity will reach more than 420 million kilowatts, and non-fossil energy will account for 25% of total energy consumption in 2030.
In water conservancy. In recent years, the main framework and arteries of the national water network have been gradually improved. During the "15th Five-Year Plan" period, we will focus on the construction of modern water networks, accelerate the demonstration and implementation of a number of major engineering projects in river management, flood control reservoirs, major water diversion, construction and renovation of large and medium-sized irrigation areas, and enhance the ability to prevent flood disasters, coordinate the allocation of water resources, and ensure urban and rural water supply.
in new infrastructure. We will strengthen overall planning and intensive and efficient utilization, systematically lay out and build a number of strategically-oriented, application-supporting, and forward-looking major scientific and technological infrastructures, promote the deployment and application of 10G optical networks and large-scale commercialization of 5G-A mobile communication networks, build a national integrated computing network, coordinate the construction of satellite communications, navigation, and remote sensing systems, and use scenario expansion as a guide to build low-altitude infrastructure, thereby providing solid support for industrial upgrading and digital intelligence development in the "15th Five-Year Plan" and beyond.
Jiupai News special correspondent Wen Yanli and Gong Lingwei reported from Beijing
Editor Xiao Jie Ren Zhuo
During the National Two Sessions in 2026, Lei Maoduan, deputy to the National People's Congress and head of Shanxi Yingbo Mihuai Development Co., Ltd., attended the meeting with a number of suggestions, one of which was about supporting the high-quality development of the rice locust industry and building a solid foundation for preventing return to poverty.
Lei Maoduan said in an interview with Jiupai News that the rice locust industry is a special Chinese herbal medicine industry specially developed for barren mountains and drylands. Because of its unique advantages of being extremely resistant to drought and barrenness, outstanding economic benefits, and strong ecological restoration capabilities, it has been rapidly promoted in barren mountains and drywalls areas with harsh natural conditions and low traditional agricultural benefits. At present, the planting area of Diyun City alone has reached more than 300,000 acres, and has spread to more than 10 provinces (autonomous regions and municipalities) across the country, including Shaanxi, Gansu, Hebei, and Henan, with a total area of more than 2 million acres, benefiting millions of farmers in mountainous areas. It has become an irreplaceable and important industry for consolidating and expanding poverty alleviation achievements in ecologically fragile areas and promoting rural revitalization.

Lei Maoduan, deputy to the National People's Congress. Picture/provided by interviewee
Lei Maoduan found that at present, most of the rice locust production areas are located in remote mountainous areas with harsh natural conditions. Agricultural production infrastructure such as field roads, soil and water conservation, and soil fertility improvement are seriously lagging behind. The situation of "depending on the weather" has not fundamentally changed. It is difficult to support the high-quality development requirements of scale, standardization, and branding. The industrial foundation for consolidating the results of poverty alleviation is still fragile.
He also added that there is a lack of professional national-level rice locust industrial engineering technology research and development institutions across the country, and the top-level design and stable mechanism for the deep integration of industry, academia, and research have not yet been formed. The systematic protection and innovative utilization system of Sophora japonica germplasm resources is not yet perfect, and the main varieties still face market iteration pressure. New varieties with high yield, high resistance and high added value require a long breeding cycle and high technical requirements, making it difficult to meet the strategic needs of rapid industrial upgrading and restricting the core competitiveness and sustainable development of the industry.
In addition, he noticed that the current industry still mainly sells raw materials of primary agricultural products, sophora rice, and most of the profit margin is lost in the processing and circulation link. The extraction and utilization of high-value active ingredients such as rutin and quercetin in sophora rice is still at the initial stage; the development of high value-added terminal products such as health foods, medicines, and daily chemical products for the big health market is seriously insufficient, resulting in the failure to maximize industrial benefits, weak ability to resist market risks, and a weak foundation for farmers to continue to increase their income. Moreover, the coordination mechanism among entities in various aspects of the industry is not yet complete, and the model of leading enterprises as the core and linking all parties to form a community of interests and values needs to be strengthened.
Therefore, Lei Maoduan suggested the layout and construction of a "National Sophora japonica germplasm resource bank" and the supporting construction of an improved seed breeding base, which should be included in the national forest germplasm resource protection and utilization system. Systematically carry out the census, collection, preservation, identification and evaluation of Sophora japonica germplasm resources across the country, and establish a national germplasm resource information sharing platform. At the same time, we support relying on this resource bank to carry out targeted breeding and joint research on new varieties with high yield, high resistance, and high added value, providing a solid "chip" guarantee for the sustained and high-quality development of the industry.
He also suggested creating a "national-level high-quality development demonstration zone for the entire rice locust industry chain" and building standardized planting and improvement projects, intensive processing and industrial cluster cultivation projects, and industrial integration and brand building projects. Support the development of new business formats such as Mihuai-themed ecological tourism and popular science research, and uniformly create and promote the "Yuncheng Mihuai" regional public brand, making it a demonstration model for the high-quality development of the country's characteristic ecological industries in arid and semi-arid areas. At the same time, the "National Forestry and Grassland Administration Mihuai Engineering Technology Research Center" was established to focus on key common technical problems in the industry, carry out applied basic research and engineering technology research and development, and strengthen the scientific and technological support engine. At the same time, the rice locust industry will be included in the national key industrial sequence of ecologically enriching the people, and long-term stable policy attention will be given.
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