Hush, have you ever heard the singing of mountains and old cities? Listen carefully and listen to the sound of the folk song. It comes from Wuchang in Jingchu, from Chengdu in Tianfu, from forest and snow plains, from water towns in the south of the Yangtze River, from the desert in the northwest... They are the ancient rhythms of this land. Just like several children in the article, they come from all over the world but finally come together. Let me tell you the story of these children's future.