Under the guidance of the International Mahjong Union, Hangzhou Branch of Chinese Chess Institute (Hangzhou Chess Institute and Hangzhou Intellectual Sports Management Center) took the lead in establishing the Mahjong Sports Technical Rating Center and the Mahjong Sports Competition Training Center.
In July, 2022, the International Mahjong Union issued the Measures for Evaluating the Technical Grades of Competitive Mahjong Players in the International Mahjong Union, and the Hangzhou Branch of China Chess Institute (Hangzhou Chess Institute and Hangzhou Intellectual Sports Management Center) issued the Measures for Evaluating the Technical Skills of Mahjong. Take the national mahjong rules as an example, from high to low, the order is: national professional 9 to national professional 1, national amateur 9 to national amateur 1. Grade certificates of different competition rules are not universal in principle.