People visit the garden of International Potato Center during the "International Potato Center and Peru Joint Honorary Day" theme event held as part of the Beijing International Horticultural Exhibition in Yanqing District in Beijing, capital of China, Sept. 1, 2019. (Xinhua/Ju Huanzong)

Artists perform during the "International Potato Center and Peru Joint Honorary Day" theme event held as part of the Beijing International Horticultural Exhibition in Yanqing District in Beijing, capital of China, Sept. 1, 2019. (Xinhua/Ju Huanzong)