Police officers of a border inspection post are about to check a cargo plane that has just arrived in Weihai, east China's Shandong Province, Feb. 3, 2021. The border inspection authority in Weihai has imposed stricter border inspection to curb the spread of COVID-19. (Xinhua/Zhu Zheng)
A police officer of a border inspection post checks passengers' identities when they enter the Chinese border in Weihai, east China's Shandong Province, Feb. 3, 2021. The border inspection authority in Weihai has imposed stricter border inspection to curb the spread of COVID-19. (Xinhua/Zhu Zheng)
Police officers of a border inspection post check a cargo plane that has just arrived in Weihai, east China's Shandong Province, Feb. 2, 2021. The border inspection authority in Weihai has imposed stricter border inspection to curb the spread of COVID-19. (Xinhua/Zhu Zheng)