Performers are seen on China Pavilion Day of the Beijing International Horticultural Exhibition in Beijing, capital of China, on June 6, 2019. The expo kicked off its China Pavilion Day event on Thursday. (Xinhua/Zhang Chenlin)

Performers are seen on China Pavilion Day of the Beijing International Horticultural Exhibition in Beijing, capital of China, on June 6, 2019. The expo kicked off its China Pavilion Day event on Thursday. (Xinhua/Zhang Chenlin)

Tourists visit China Pavilion at the Beijing International Horticultural Exhibition in Beijing, capital of China, on June 6, 2019. The expo kicked off its China Pavilion Day event on Thursday. (Xinhua/Ren Chao)