Dong Bin, head of a vinegar making plant, tastes vinegar to check the quality of it in Chishui, southwest China's Guizhou Province, June 26, 2020. Chishui has been famous for its sun vinegar, which has maintained a traditional making process. The production techniques of the Chishui vinegar, featuring the sunning process, was listed as a provincial intangible cultural heritage of Guizhou in 2009. (Xinhua/Tao Liang)
