About 50%-70%. According to the information displayed on the official website of Shenlan Bao, around 50%-70% of the national subsidy for medical expenses for knee replacement in Anhui Province is a support policy. Anhui Province, referred to as "Wan", is a provincial-level administrative region of the People's Republic of China and the provincial capital Hefei City, located in the Yangtze River Delta region of East China.