Hong Kong film teacher Li Xinxin is played by Gao. My 1997 is based on the changes between Hong Kong and the mainland in the past 20 years before and after the return of Hong Kong, and connects the trajectory of the great era with the struggles of a generation of young people such as Gao Jianguo and Li Xinxin. In the play, Li Xinxin, an English teacher played by Gao, is intellectual and elegant, and she first met the male host played by Yin in her own school. When she heard that Gao Jianguo wanted to go to school but couldn't afford the tuition, she readily agreed to help Gao Jianguo apply for priority admission. This enthusiastic and kind move won the audience's favor. In the play, Li Xinxin's fashion dress has also become a hot topic among netizens. A green knit top with a black hip skirt and an orange belt around the waist is retro and fashionable, which gives full play to the high figure advantage and allows the audience to truly see the fashion beauty of new women in Hong Kong in the 1990s.