If it has been more than a month and the nucleic acid test is positive again, the possibility of "re-infection" is relatively high. Generally, patients with normal immune function can obtain protection for more than 3 to 6 months after recovering from infection.

1. CCTV News stated that the general "recovery" occurs within one month after recovery. If it has been more than a month and the nucleic acid is positive for and , the possibility of "re-infection" is relatively high. Among people with normal immune function, the probability of "re-positive" or " secondary infection of " is very low. Generally, patients with normal immune function can obtain protection for more than 3 to 6 months after recovering from infection. Then the probability of "secondary infection" during this period is also very low, so there is no need to worry.

2. China Unicom and Tencent signed a new round of strategic cooperation agreement . The two parties stated that they will give full play to their resource and technological advantages, focus on technological innovation , industrial upgrading, network security and other directions, and carry out in-depth cooperation in the government and enterprise, individual and family customer markets as well as digital transformation and other aspects. As early as 2016, Tencent reached a strategic partnership with China Unicom. The signing of a new round of strategic cooperation agreement also marks the further deepening of cooperation between the two parties.

3. The Chief Executive of the Macau SAR, Ho Iat Seng , will go to Beijing to report on his work and report to national leaders the work of the Macau SAR government in the past year and the policy priorities for next year. While the Chief Executive is away from Macao, the Secretary for Administration and Justice of the SAR Government, Mr Cheung Wing-chun, will temporarily act as Chief Executive.

4. The world’s first 3,200-ton self-elevating wind power installation ship was delivered and set sail at the COSCO Shipping Offshore Terminal in Qidong, Jiangsu. As the world's first fourth-generation wind power installation ship N966, it has the advantages of strong lifting capacity, good maneuverability, large space capacity, low energy consumption and low emissions. It can not only install wind turbines, but also be used in oil and gas related industries. After this delivery, the ship will go to the British North Sea to serve offshore wind farms under construction.

5. The United States is expected to become a net exporter of crude oil in 2023. Over the past few years, the United States has become the world's largest exporter of crude oil, but exports have not exceeded imports since World War II. Things may change next year. As of December, U.S. crude oil sales to other countries reached a record 3.4 million barrels per day, and daily exports of refined products such as gasoline and diesel were about 3 million barrels.

6. According to British media reports, FIFA President Infantino hopes that the World Cup will be held every three years. This new plan has received support from Asia and Africa. Infantino now hopes to implement a new plan to host the World Cup every three years sometime in the next decade. It is reported that the plan has received the support of AFC and the African Football Confederation, and also needs the support of UEFA and South American Football Confederation to pass.

7.Li Yizhong, president of the China Federation of Industrial Economics and former minister of the Ministry of Industry and Information Technology, said today at the 2022Green Development Summit that the timely and steady introduction of the carbon tax must grasp the time, scope and intensity, and the enthusiasm of the energy industry cannot be dampened by the carbon tax, so as to affect energy security and economic growth.

8. 2023 is the 80th anniversary of the Yan'an Double Support Movement initiated by Mao Zedong and other older generation proletarian revolutionaries. In order to solidly carry out commemorative activities and do a good job in double support during the New Year and Spring Festival, the Ministry of Veterans Affairs, the Political Work Department of the Central Military Commission, and the National Double Support Work Leading Group Office issued a notice requiring extensive activities to commemorate the 80th anniversary of the Yan'an Double Support Movement. All localities and armed forces should carry out various commemorative activities according to local conditions to promote the tradition of dual support to be passed down and carried forward. Focusing on the central tasks of the Party in the new era and the new journey and the realization of the centenary goal of the founding of the army, we will further unite the will of the military and the people, gather the strength of the military and local people, give full play to the unique advantages of dual support work, and strive to achieve new development based on the idea of ​​solidifying the unity and progress of the military and the government, the military and the people, and in helping the country New achievements have been made in the implementation of major strategies, new achievements have been made in supporting the troops to strengthen training and preparation for war, and improving their ability to win. New achievements have been made in maintaining social harmony and stability, promoting people's happiness and well-being, and better serving the overall work of the party and the country, and the overall development of national defense and the army.

9. Most vegetables and fruits have the effects of promoting body fluids, moistening dryness, reducing heat and laxative. Vegetables, fruits, etc. contain a lot of water and can replenish body fluids.In addition, you can also eat more honey, lily, lotus seeds and other cleansing and tonic products to adapt to the cleansing nature of the lungs.