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A group of young people held a class reunion and invited a respected teacher, Li Xue (played by Liu Zhiyu), who was admitted to Guangxi Normal University in 1995 and became the first college student in the history of the mountain, but she gave up the opportunity to go to university and chose to stay in the mountain village as a volunteer teacher for the children. At first, her parents were adamant that she would stay as a volunteer teacher instead of going to university, but her determination to be a teacher of children remained the same. Her childhood sweetheart's boyfriend Chen Dong (played by Lei Qifei) is very supportive of her. Li Xue said that she gave up the opportunity to go to university herself, and she stayed so that all the children in the mountains could be admitted to university. Although she had many difficulties in the process of teaching, no pens, no textbooks, and the classroom collapsed, she overcame them one by one. With the care and support of the party and the government, they have new school buildings, new schoolbags and stationery, and all the left-behind out-of-school children in the mountains have been able to go to school.