The film mainly tells that there is a "Worry-Relief Barbershop" in an unremarkable street under the city wall. Guests who come to have a haircut can confide in their hearts at will. The boss, A Quan, will patiently listen to every customer tell their story. A Quan also has a small world in his heart. He firmly believes that when the meteor shower comes, all his wishes can be realized, but no one believes it. Until one day he met Ye Zhenzhen, a terminally ill girl, and they were in love with each other.
After the victory of the Anti-Japanese War, Chiang Kai-shek stepped up efforts to eliminate dissidents, and first targeted Long Yun, who was in power in Yunnan and had progressive ideas.
This movie accurately describes the accomplishment of chief hydraulic engineer Mr. Bing Li 2500 years ago, and his name is used as the title of this movie.