1. China Audio-video and Digital Publishing Association (CADPA). (2021). China Gaming Industry Report. Guangzhou.
2. Ye, D. (2021). Lacking licenses, how game industry solves this question. South Daily. B01.
3. Damiano, F. (2015). Beyond today’s video game rating systems: A critical approach to PEGI and ESRB, and proposed improvements. Games and Culture.
4. Yuan, Y. (2020). The analyse of Chinese video game age notice and the game industry regulatory. View on Publishing.
5. Liu, H., Zeng, T. (2020). How government policies and regulations will affect share prices of online game companies in China.