A master’s degree student in China, who has taught hundreds of adults and children to ride bicycles over the past two years and earned 270,000 yuan (US$39,000) from it, recently went viral on social media.

The man, whose surname is Li, is a third-year master’s degree candidate at Shanghai University of Sport (SUP) majoring in sports education, as reported by the news outlet The Cover.

Li shared that years ago, he and a friend recognised the demand for bike-riding instruction and decided to establish a business to seize the opportunity. However, the friend soon left the partnership after securing a stable job in Shanghai.

Once admitted to SUP, Li used his spare time to teach bike-riding, according to the report. He began sharing instructional videos on social media platforms, and within two months, he received his first order.

Li seeks spacious locations near his customers’ homes for lessons. He offers a success-guarantee package priced at 800 yuan (US$110), ensuring that participants will be able to ride a bicycle by the end of the course.