On March 16, the Financial Stability and Development Committee of the State Council held a special meeting to study the current economic situation and capital market issues. The meeting was chaired by Liu He, Member of the Political Bureau of the CPC Central Committee, Vice Premier of the State Council, and Director of the Finance Committee. Responsible comrades from relevant departments attended the meeting.

The meeting pointed out that under the current complex situation, the most important thing is to insist that development is the top priority of the party to govern and rejuvenate the country, adhere to economic construction as the center, adhere to deepen reform and expand opening up, adhere to the principles of marketization and the rule of law, and adhere to the "two Unswervingly", earnestly protect property rights, fully implement the spirit of the Central Economic Work Conference and the deployment of the National "Two Sessions", coordinate epidemic prevention and control and economic and social development, keep the economy operating within a reasonable range, and maintain the stable operation of the capital market.

The meeting examined related issues. Regarding macroeconomic operation, we must implement the decisions and arrangements of the CPC Central Committee, effectively invigorate the economy in the first quarter, proactively respond to monetary policy, and maintain moderate growth in new loans. Regarding real estate enterprises, it is necessary to timely research and propose effective and effective response plans for preventing and resolving risks, and propose supporting measures for the transition to a new development model. Regarding China Concept Stock, the regulatory agencies of China and the United States have maintained good communication, and have made positive progress, and are working on forming a specific cooperation plan. The Chinese government continues to support various types of companies to list overseas. Regarding platform economic governance, relevant departments should improve the established plans in accordance with the principles of marketization, legalization, and internationalization, adhere to seeking progress while maintaining stability, and steadily advance and complete the rectification work of large platform companies through standardized, transparent, and predictable supervision. Both red and green lights must be set up to promote the stable and healthy development of the platform economy and improve international competitiveness. Regarding the stability of Hong Kong's financial market, the regulators of the Mainland and Hong Kong should strengthen communication and cooperation.

The meeting emphasized that the relevant departments should earnestly undertake their own responsibilities, actively introduce policies that are favorable to the market, and prudently introduce contractionary policies. Respond in a timely manner to hot issues that the market is concerned about. Any policy that has a significant impact on the capital market should be coordinated with the financial management department in advance to maintain the stability and consistency of policy expectations. The Finance Committee of the State Council will, in accordance with the requirements of the Party Central Committee and the State Council, step up coordination and communication, and conduct accountability when necessary. Financial institutions must proceed from the overall situation and firmly support the development of the real economy. Long-term institutional investors are welcome to increase their shareholdings. All parties must deeply understand the significance of the "two establishments", resolutely implement the "two maintenances", maintain the long-term trend of the healthy development of China's economy, and jointly maintain the stable development of the capital market.

BIO

优点 可以接收更多连接 缺点 线程内存消耗 cpu调度消耗

NIO

优点 规避多线程问题 缺点 C10K，弊端: 假设 1万个连接 只有一个发来数据每循环一次 必须向内核发送1万次recv的系统调用 那么这里有9999次是无意义的，浪费的，消耗时间和资源的(用户空间向内核空间的循环遍历，复杂度在系统调用上)

多路复用器

select 1024限制 ，poll 无限制
epoll
jdk1.5及以上 epoll_create 内核中开辟空间FD,红黑树 epoll_ctl add(accept) epoll_wait 阻塞(timeout) 等待文件描述符上的事件
AIO JDK1.7中，这部分内容被称作NIO.2 AsynchronousSocketChannel read/write方法都是异步的，完成后会主动调用回调函数 异步非阻塞，服务器实现模式为一个有效请求一个线程，客户端的I/O请求都是由OS先完成了再通知服务器应用去启动线程进行处理，

三者应用场景

BIO 连接数目比较小且固定的架构，对服务器资源要求比较高，并发局限于应用中，JDK1.4以前的唯一选择，但程序直观简单易理解。
NIO 连接数目多且连接比较短（轻操作）的架构，比如聊天服务器，并发局限于应用中，编程比较复杂，JDK1.4开始支持。
AIO连接数目多且连接比较长（重操作）的架构，比如相册服务器，充分调用OS参与并发操作，编程比较复杂，JDK7开始支持。

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Last year, NASA's Perseverance rover collected its first Martian rock sample. The scientists' final analysis showed that water was present in Mars' Jezero Crater for "a very long time" -- tens of thousands or millions of years. This, in turn, suggests that Mars' water is stable enough that life may have once existed.

"New Scientist" weekly reported that China's Zhurong rover also found signs of water shaping the Martian landscape.

China's Zhurong rover landed in May 2021 on the Utopia Plain, a large plain in the northern lowlands of Mars.

The report pointed out that preliminary data collected by Zhurong shows that the Utopia Plain has been affected by wind for a long time in the past, and may even have been eroded by water. These preliminary data were analyzed by Ding Liang and colleagues at Harbin Institute of Technology in China.

The data showed that many of the rocks found around the rover's landing site had etch marks and grooves on one side, suggesting they must have been eroded by strong wind and sand, and some rocks had a flaky texture, which usually occurs with water. produced by interaction.

Joel Davies, from the Natural History Museum, London, UK, said: "What's really exciting is that many scientists believe that the Utopian Plains may have hosted an ancient ocean of liquid water billions of years ago. As Zhurong continues Exploration, and hopefully it will help answer this question that has puzzled scientists for decades."

The latest data from Zhurong shows that the Martian landscape has signs of erosion by water

my country's Tianwen-1 "Zhurong" rover has carried out a number of explorations on Mars, and my country will go further in Mars exploration in the future. The official said that it plans to realize the Mars sampling return mission by 2030.

According to Wu Weiren, the difficulty of this project is much greater than that of lunar sampling and return. The first problem to be solved is to develop a launch vehicle with greater thrust. In the follow-up, China is also preparing to conduct marginal exploration of the solar system.

"The sun is about 150 million kilometers from the earth, which is an astronomical unit. We plan to achieve the 'double hundred' goal in 2049, that is, on the 100th anniversary of the founding of New China, to complete 100 astronomical units, which is 15 billion kilometers away deep space exploration."

my country's first Mars exploration mission successfully landed on Mars on May 15, 2021. Zhurong was not designed to return, so it will serve over a period of time after its design life.

On March 8, according to the Science and Technology Daily, the second "Minister's Channel" of the Fifth Session of the 13th National People's Congress opened today. Minister of Science and Technology Wang Zhigang brought you good news about new crown drugs and vaccines.

Wang Zhigang revealed that broad-spectrum drugs against coronavirus or new coronavirus are being actively developed; vaccination through nasal spray and inhalation is also under study, and there is good progress now.

Wang Zhigang said that China has always adhered to five major directions to carry out scientific research, including vaccines, drugs, testing, animal models and scientific traceability.

In terms of vaccines, there were 3 inactivated vaccines and 1 adenovirus vector vaccine with conditions, and this year, another recombinant protein vaccine was listed with conditions. There are also two technical routes that have made positive progress. One is mRNA vaccines, which have entered Phase III clinical trials; the other is DNA vaccines, which have also entered Phase III clinical trials. This is an important achievement achieved by the majority of scientific researchers with their level, integrity, dedication and perseverance.

In terms of drug research and development, 1 neutralizing antibody drug has been marketed with conditions, and 3 small molecule drugs have entered Phase III clinical trials. In addition, there are some neutralizing antibody drugs, small molecule drugs, and traditional Chinese medicines, which are all under active research and development, showing good prospects.

In terms of detection, sample detection can be completed in as little as 30 minutes, and an integrated detection system can detect 200,000 samples a day, greatly improving the capability.

腾讯音乐娱乐集团（TME）对短暂下架后的旧版“音兔”进行了重新设计和升级，现已重新上架 App Store。

腾讯音兔 App 是由全民 K 歌推出的一款年轻新潮的音乐短视频 App，最初于 2018 年上架，除了最新的一次更新外，曾于 2021 年进行过一次更新，再之前就是 2019 年，不过都是修复 bug。

此次上架后，腾讯音兔 App 版本号直接从 2.9.6 跨越到了 3.1.6，更新内容显示为：

【短视频 k 歌】音兔新升级支持 k 歌啦！海量曲库、新潮音效、沉浸画面，让你嗨唱爽翻天！
【百变舞台】丰富的短视频模板，让你随时成为最亮眼的 Super Vocal！
【清新曲风】想唱当下最火的热歌吉他版、钢琴版？音兔应有尽有！
据介绍，腾讯音兔 App 支持一键制作音乐短片，而且此次还新增了 K 歌功能，用户可以将翻唱的歌曲进行二次创作，目前支持清唱创作和视频创作两种方式，制作好的音乐视频可以发布到首页中，供其他用户点赞和评论。