Kindergarten children and their parents participate in a parent-child game in Mentougou District in Beijing, capital of China, April 29, 2019. (Xinhua/Hou Jiqing)

Kindergarten children participate in a parent-child game in Mentougou District in Beijing, capital of China, April 29, 2019. (Xinhua/Hou Jiqing)

Kindergarten children participate in a parent-child game in Mentougou District in Beijing, capital of China, April 29, 2019. (Xinhua/Hou Jiqing)

Kindergarten children and their parents participate in a parent-child game in Mentougou District in Beijing, capital of China, April 29, 2019. (Xinhua/Hou Jiqing)