People visit a farmland products fair in Guiyang, capital of southwest China's Guizhou Province, Aug. 9, 2018. The five-day fair kicked off on Thursday. (Xinhua/Liu Xu)

A visitor views displayed fungus during a farmland products fair in Guiyang, capital of southwest China's Guizhou Province, Aug. 9, 2018. The five-day fair kicked off on Thursday. (Xinhua/Liu Xu)

Exhibitors arrange products at a farmland products fair in Guiyang, capital of southwest China's Guizhou Province, Aug. 9, 2018. The five-day fair kicked off on Thursday. (Xinhua/Liu Xu)

People visit a farmland products fair in Guiyang, capital of southwest China's Guizhou Province, Aug. 9, 2018. The five-day fair kicked off on Thursday. (Xinhua/Liu Xu)