Citizens buy fish with mobile phone via QR code payment service at Dongji fish market, literally means the easternmost fish market, in Fuyuan City, northeast China's Heilongjiang Province, Sept. 4, 2022.

Fuyuan, China's easternmost city, is dubbed "capital of freshwater fish in China," as the rivers here have an abundance of freshwater fish. With the help of local government, Dongji fish market has been built and turned into one of the largest freshwater fish trade markets in Heilongjiang Province. (Xinhua/Lan Hongguang)