Children with leukemia participate in a role play game as doctors in the Xinqiao Hospital affiliated to the Army Medical University in Chongqing, Southwest China, May 30, 2018. A role play game which switched the role of young leukemia patients with their doctors and nurses was held here on May 30, aimed to ease the fear and resentment for long-term treatment. [Photo/Xinhua]

A child with leukemia participates in a role play game as doctors in the Xinqiao Hospital affiliated to the Army Medical University in Chongqing, Southwest China, May 30, 2018. A role play game which switched the role of young leukemia patients with their doctors and nurses was held here on May 30, aimed to ease the fear and resentment for long-term treatment. [Photo/Xinhua]

A child with leukemia participates in a role play game as doctors in the Xinqiao Hospital affiliated to the Army Medical University in Chongqing, Southwest China, May 30, 2018. A role play game which switched the role of young leukemia patients with their doctors and nurses was held here on May 30, aimed to ease the fear and resentment for long-term treatment.[Photo/Xinhua]

Children with leukemia do warm-up exercise during a role play game in the Xinqiao Hospital affiliated to the Army Medical University in Chongqing, Southwest China, May 30, 2018. A role play game, which switches the role of young leukemia patients with their doctors and nurses, was held on May 30, aimed to ease the fear and resistance for long-term treatment. [Photo/Xinhua]