Children practice basic skills of ballet during summer vacation at a training institution in Qinzhou, south China's Guangxi Zhuang Autonomous Region, July 19, 2019. (Xinhua/Zhang Ailin)

Children practice basic skills of ballet during summer vacation at a training institution in Qinzhou, south China's Guangxi Zhuang Autonomous Region, July 19, 2019. (Xinhua/Zhang Ailin)

Children practice basic skills of ballet during summer vacation at a training institution in Qinzhou, south China's Guangxi Zhuang Autonomous Region, July 19, 2019. (Xinhua/Zhang Ailin)

Children practice basic skills of ballet during summer vacation at a training institution in Qinzhou, south China's Guangxi Zhuang Autonomous Region, July 19, 2019. (Xinhua/Zhang Ailin)

Children practice basic skills of ballet during summer vacation at a training institution in Qinzhou, south China's Guangxi Zhuang Autonomous Region, July 19, 2019. (Xinhua/Zhang Ailin)

Children practice basic skills of ballet during summer vacation at a training institution in Qinzhou, south China's Guangxi Zhuang Autonomous Region, July 19, 2019. (Xinhua/Zhang Ailin)

Children practice basic skills of ballet during summer vacation at a training institution in Qinzhou, south China's Guangxi Zhuang Autonomous Region, July 19, 2019. (Xinhua/Zhang Ailin)

Children practice basic skills of ballet during summer vacation at a training institution in Qinzhou, south China's Guangxi Zhuang Autonomous Region, July 19, 2019. (Xinhua/Zhang Ailin)

Children practice ballet during summer vacation at a training institution in Qinzhou, south China's Guangxi Zhuang Autonomous Region, July 19, 2019. (Xinhua/Zhang Ailin)