Dancers perform during a charity dance performance at Shanghai International Dance Center, east China's Shanghai, Aug. 7, 2019. The charity dance performance was held here on Wednesday to celebrate the 70th anniversary of the founding of the People's Republic of China. (Xinhua/Liu Ying)

Dancers perform during a charity dance performance at Shanghai International Dance Center, east China's Shanghai, Aug. 7, 2019. The charity dance performance was held here on Wednesday to celebrate the 70th anniversary of the founding of the People's Republic of China. (Xinhua/Liu Ying)

Dancers perform during a charity dance performance at Shanghai International Dance Center, east China's Shanghai, Aug. 7, 2019. The charity dance performance was held here on Wednesday to celebrate the 70th anniversary of the founding of the People's Republic of China. (Xinhua/Liu Ying)

Dancers perform during a charity dance performance at Shanghai International Dance Center, east China's Shanghai, Aug. 7, 2019. The charity dance performance was held here on Wednesday to celebrate the 70th anniversary of the founding of the People's Republic of China. (Xinhua/Liu Ying)

Dancers perform during a charity dance performance at Shanghai International Dance Center, east China's Shanghai, Aug. 7, 2019. The charity dance performance was held here on Wednesday to celebrate the 70th anniversary of the founding of the People's Republic of China. (Xinhua/Liu Ying)