Aerial photo taken on June 21, 2020 shows the oyster cultivation fields in Qinzhou City, south China's Guangxi Zhuang Autonomous Region. With the advantage of the location of Maoweihai natural harbor, Qinzhou has developed an oyster industry which has a cultivation field of 158,000 Mu (about 10,533 hectares) and a complex output value of about 3,000 million Yuan (435.97 million US dollars). (Photo/China New Service)

Aerial photo taken on June 21, 2020 shows the oyster cultivation fields in Qinzhou City, south China's Guangxi Zhuang Autonomous Region. With the advantage of the location of Maoweihai natural harbor, Qinzhou has developed an oyster industry which has a cultivation field of 158,000 Mu (about 10,533 hectares) and a complex output value of about 3,000 million Yuan (435.97 million US dollars). (Photo/China New Service)

Aerial photo taken on June 21, 2020 shows the oyster cultivation fields in Qinzhou City, south China's Guangxi Zhuang Autonomous Region. With the advantage of the location of Maoweihai natural harbor, Qinzhou has developed an oyster industry which has a cultivation field of 158,000 Mu (about 10,533 hectares) and a complex output value of about 3,000 million Yuan (435.97 million US dollars). (Photo/China New Service)

Photo taken on June 21, 2020 shows floating rafts for oyster culture in Qinzhou City, south China's Guangxi Zhuang Autonomous Region. (Photo/China New Service)