Actresses perform during the 30th Qingdao International Beer Festival in Qingdao, east China's Shandong Province, Aug. 16, 2020. The 17-day beer festival, hosting visitors with 1,500 kinds of beer from more than 40 countries and regions under intensified COVID-19 prevention and control measures, concluded on Sunday. (Xinhua/Li Ziheng)

A staff member serves beer for customers during the 30th Qingdao International Beer Festival in Qingdao, east China's Shandong Province, Aug. 16, 2020. The 17-day beer festival, hosting visitors with 1,500 kinds of beer from more than 40 countries and regions under intensified COVID-19 prevention and control measures, concluded on Sunday. (Xinhua/Li Ziheng)

Artists perform during the 30th Qingdao International Beer Festival in Qingdao, east China's Shandong Province, Aug. 16, 2020. The 17-day beer festival, hosting visitors with 1,500 kinds of beer from more than 40 countries and regions under intensified COVID-19 prevention and control measures, concluded on Sunday. (Xinhua/Li Ziheng)

A staff member serves beer for customers during the 30th Qingdao International Beer Festival in Qingdao, east China's Shandong Province, Aug. 16, 2020. The 17-day beer festival, hosting visitors with 1,500 kinds of beer from more than 40 countries and regions under intensified COVID-19 prevention and control measures, concluded on Sunday. (Xinhua/Li Ziheng)

Customers watch performance during the 30th Qingdao International Beer Festival in Qingdao, east China's Shandong Province, Aug. 16, 2020. The 17-day beer festival, hosting visitors with 1,500 kinds of beer from more than 40 countries and regions under intensified COVID-19 prevention and control measures, concluded on Sunday. (Xinhua/Li Ziheng)