This song is called "Youth", sung by Wang Zhengliang and Zhu Hua. It was the background music that moved the appearance of the Xie couple, one of China's top ten figures, in 2018.

Extended information:

The movie "Youth" is a feature film produced by Zhejiang Dongyang Meila Media Co., Ltd., directed by Feng Xiaogang, written by Yan Geling, and starring Huang Xuan, Miao Miao, Zhong Chuxi , starring Zhang Renbo. The film is adapted from Yan Geling's novel of the same name. It is set in the 1970s and 1980s. It tells the story of a group of young teenagers in their prime in an army art troupe full of ideals and passion, experiencing the growth of love and a life full of variables. story. The film premiered at the Toronto International Film Festival on September 7, 2017, and was released simultaneously in China and North America on December 15.

Reference link: Baidu Encyclopedia_Youth