1. Personal interests: Zhang Ruinian has a strong interest in calligraphy and writing, and he can make more like-minded people through the platform of Tik Tok.
2. Dissemination of traditional culture: Tik Tok platform has a huge user base, and Zhang Ruinian relies on Tik Tok to spread the traditional culture of China, so that more people can understand and like the art of calligraphy.