Children draw pictures of their hometown under instruction of volunteers during an activity to greet the upcoming Dragon Boat Festival in Yuyao, East China’s Zhejiang province, May 24, 2017. Volunteers and some 60 children of migrant workers attended the activity at a kindergarten on May 24. [Photo/Xinhua]

Children make zongzi, a pyramid-shaped dumpling made of glutinous rice wrapped in bamboo or reed leaves, under instruction of volunteers during an activity to greet the upcoming Dragon Boat Festival in Yuyao, east China’s Zhejiang province, May 24, 2017. Volunteers and some 60 children of migrant workers attended the activity at a kindergarten on May 24. [Photo/Xinhua]

A boy displays a paper-made dragon boat model during an activity to greet the upcoming Dragon Boat Festival at a kindergarten in Shijiazhuang, capital of North China’s Hebei province, May 23, 2017. The Dragon Boat Festival of this year will fall on May 30. [Photo/Xinhua]