Tong Jincheng is an artist under 5 1 Media. Worry-Free Media is a professional Internet brokerage company, which mainly focuses on artists' podcasting. Tong Jincheng is one of the artists under 51 Media. Worry-Free Media is not only a professional Internet-based brokerage company, but also the executive director of the Network Performance Branch of China Performance Industry Association. As early as 20 16, the company put forward the operation mode of "internet plus artist broker", which has rich experience in IP incubation of characters and mature pyramid incubation system.