How many ethnic traditional sports have been excavated and organized in Beijing?

Beijing has held six national traditional sports games and organized delegations to participate in the National Minority Traditional Sports Games. Pearl ball, wooden ball, and cu ball, which are the traditional ethnic sports events organized by Beijing, have been designated as the official events of the National Ethnic Minority Traditional Sports Games; five events, namely, jumping rope, hopscotch, skipping rope, shuttlecock, and pushing the iron ring, have been included in the book entitled "Chinese Physical Fitness and Fitness Methods (Volume 1)", which was edited and published by ten ministries and commissions, such as the National People's Committee, the State Sports Commission, and the State Education Commission, and was popularized throughout the country. Excerpted from "100 Questions and Answers on Ethnicity and Religion"