Actors celebrate the opening of the 28th Qingdao International Beer Festival in Qingdao, east China's Shandong Province, July 20, 2018. The beer festival, gathering 200 beer brands from over 30 countries and regions, kicked off here on Friday. (Xinhua/Li Ziheng)

Aerial photo taken on July 20, 2018 shows the main venue of the 28th Qingdao International Beer Festival held in Qingdao, east China's Shandong Province. The beer festival, gathering 200 beer brands from over 30 countries and regions, kicked off here on Friday. (Xinhua/Li Ziheng)

People celebrate the opening of the 28th Qingdao International Beer Festival in Qingdao, east China's Shandong Province, July 20, 2018. The beer festival, gathering 200 beer brands from over 30 countries and regions, kicked off here on Friday. (Xinhua/Li Ziheng)

Customers taste beer during the 28th Qingdao International Beer Festival held in Qingdao, east China's Shandong Province, July 20, 2018. The beer festival, gathering 200 beer brands from over 30 countries and regions, kicked off here on Friday. (Xinhua/Li Ziheng)

Customers taste beer during the 28th Qingdao International Beer Festival held in Qingdao, east China's Shandong Province, July 20, 2018. The beer festival, gathering 200 beer brands from over 30 countries and regions, kicked off here on Friday. (Xinhua/Li Ziheng)

Actors from Russia perform during the opening ceremony of the 28th Qingdao International Beer Festival in Qingdao, east China's Shandong Province, July 20, 2018. The beer festival, gathering 200 beer brands from over 30 countries and regions, kicked off here on Friday. (Xinhua/Li Ziheng)