Wang Tong, a mechanic of China Railway Shenyang Bureau, disinfects a train in Shenyang, capital of northeast China's Liaoning Province, Feb. 14, 2021. Since December last year, some areas in China's northeastern Heilongjiang, Jilin, and Liaoning Provinces reported newly confirmed COVID-19 cases. Related areas responded immediately according to epidemic prevention requirements. Mass nucleic acid testing were conducted in key areas in an effort to stem the spread of the coronavirus. Recently, no new confirmed COVID-19 cases have been reported here for several days. During the Spring Festival vacation, many workers stick to their posts to make sure people can celebrate the festival safely. (Xinhua/Pan Yulong)

Zhao Shuhua, a community worker, transports food at Wenhua Community of Dongchang District in Tonghua, northeast China's Jilin Province, Feb. 15, 2021. Since December last year, some areas in China's northeastern Heilongjiang, Jilin, and Liaoning Provinces reported newly confirmed COVID-19 cases. Related areas responded immediately according to epidemic prevention requirements. Mass nucleic acid testing were conducted in key areas in an effort to stem the spread of the coronavirus. Recently, no new confirmed COVID-19 cases have been reported here for several days. During the Spring Festival vacation, many workers stick to their posts to make sure people can celebrate the festival safely. (Xinhua/Xu Chang)

Wang Tong, a mechanic of China Railway Shenyang Bureau, disinfects a train in Shenyang, capital of northeast China's Liaoning Province, Feb. 14, 2021. Since December last year, some areas in China's northeastern Heilongjiang, Jilin, and Liaoning Provinces reported newly confirmed COVID-19 cases. Related areas responded immediately according to epidemic prevention requirements. Mass nucleic acid testing were conducted in key areas in an effort to stem the spread of the coronavirus. Recently, no new confirmed COVID-19 cases have been reported here for several days. During the Spring Festival vacation, many workers stick to their posts to make sure people can celebrate the festival safely. (Xinhua/Pan Yulong)

Zhao Shuhua, a community worker, talks to her son and daughter-in-law by mobile phone at Wenhua Community of Dongchang District in Tonghua, northeast China's Jilin Province, Feb. 16, 2021. Since December last year, some areas in China's northeastern Heilongjiang, Jilin, and Liaoning Provinces reported newly confirmed COVID-19 cases. Related areas responded immediately according to epidemic prevention requirements. Mass nucleic acid testing were conducted in key areas in an effort to stem the spread of the coronavirus. Recently, no new confirmed COVID-19 cases have been reported here for several days. During the Spring Festival vacation, many workers stick to their posts to make sure people can celebrate the festival safely. (Xinhua/Xu Chang)

Zhang Yuanbo, a staff member of Tonghua Finance Bureau, works as an epidemic prevention worker at Qianye Lake Community in Dongchang District of Tonghua, northeast China's Jilin Province, Feb. 15, 2021. Since December last year, some areas in China's northeastern Heilongjiang, Jilin, and Liaoning Provinces reported newly confirmed COVID-19 cases. Related areas responded immediately according to epidemic prevention requirements. Mass nucleic acid testing were conducted in key areas in an effort to stem the spread of the coronavirus. Recently, no new confirmed COVID-19 cases have been reported here for several days. During the Spring Festival vacation, many workers stick to their posts to make sure people can celebrate the festival safely. (Xinhua/Xu Chang)

Zhao Shuhua, a community worker, patrols at Wenhua Community of Dongchang District in Tonghua, northeast China's Jilin Province, Feb. 15, 2021. Since December last year, some areas in China's northeastern Heilongjiang, Jilin, and Liaoning Provinces reported newly confirmed COVID-19 cases. Related areas responded immediately according to epidemic prevention requirements. Mass nucleic acid testing were conducted in key areas in an effort to stem the spread of the coronavirus. Recently, no new confirmed COVID-19 cases have been reported here for several days. During the Spring Festival vacation, many workers stick to their posts to make sure people can celebrate the festival safely. (Xinhua/Xu Chang)

Zhang Yuanbo, a staff member of Tonghua Finance Bureau, registers information for a resident at Qianye Lake Community where he works as an epidemic prevention worker in Dongchang District of Tonghua, northeast China's Jilin Province, Feb. 15, 2021. Since December last year, some areas in China's northeastern Heilongjiang, Jilin, and Liaoning Provinces reported newly confirmed COVID-19 cases. Related areas responded immediately according to epidemic prevention requirements. Mass nucleic acid testing were conducted in key areas in an effort to stem the spread of the coronavirus. Recently, no new confirmed COVID-19 cases have been reported here for several days. During the Spring Festival vacation, many workers stick to their posts to make sure people can celebrate the festival safely. (Xinhua/Xu Chang)

Zhao Shuhua (1st R), a community worker, transports food at Wenhua Community of Dongchang District in Tonghua, northeast China's Jilin Province, Feb. 15, 2021. Since December last year, some areas in China's northeastern Heilongjiang, Jilin, and Liaoning Provinces reported newly confirmed COVID-19 cases. Related areas responded immediately according to epidemic prevention requirements. Mass nucleic acid testing were conducted in key areas in an effort to stem the spread of the coronavirus. Recently, no new confirmed COVID-19 cases have been reported here for several days. During the Spring Festival vacation, many workers stick to their posts to make sure people can celebrate the festival safely. (Xinhua/Xu Chang)

Zhang Yuanbo, a staff member of Tonghua Finance Bureau, disinfects himself at Qianye Lake Community where he works as an epidemic prevention worker in Dongchang District of Tonghua, northeast China's Jilin Province, Feb. 15, 2021. Since December last year, some areas in China's northeastern Heilongjiang, Jilin, and Liaoning Provinces reported newly confirmed COVID-19 cases. Related areas responded immediately according to epidemic prevention requirements. Mass nucleic acid testing were conducted in key areas in an effort to stem the spread of the coronavirus. Recently, no new confirmed COVID-19 cases have been reported here for several days. During the Spring Festival vacation, many workers stick to their posts to make sure people can celebrate the festival safely. (Xinhua/Xu Chang)

Zhang Yuanbo, a staff member of Tonghua Finance Bureau, works as an epidemic prevention worker at Qianye Lake Community in Dongchang District of Tonghua, northeast China's Jilin Province, Feb. 15, 2021. Since December last year, some areas in China's northeastern Heilongjiang, Jilin, and Liaoning Provinces reported newly confirmed COVID-19 cases. Related areas responded immediately according to epidemic prevention requirements. Mass nucleic acid testing were conducted in key areas in an effort to stem the spread of the coronavirus. Recently, no new confirmed COVID-19 cases have been reported here for several days. During the Spring Festival vacation, many workers stick to their posts to make sure people can celebrate the festival safely. (Xinhua/Xu Chang)