Performers dance during the Chad Day of the Beijing International Horticultural Exhibition in Beijing, capital of China, on May 15, 2019. The expo welcomed the Chad Day on Wednesday. (Xinhua/Ren Chao)

Performers sing during the Chad Day of the Beijing International Horticultural Exhibition in Beijing, capital of China, on May 15, 2019. The expo welcomed the Chad Day on Wednesday. (Xinhua/Ren Chao)

Tourists visit the Chad Pavilion at the central Africa joint garden of the Beijing International Horticultural Exhibition in Beijing, capital of China, May 15, 2019. The expo welcomed the Chad Day on Wednesday. (Xinhua/Ren Chao)

Tourists visit the Chad Pavilion at the central Africa joint garden of the Beijing International Horticultural Exhibition in Beijing, capital of China, May 15, 2019. The expo welcomed the Chad Day on Wednesday. (Xinhua/Ren Chao)