Beijing children's hallux valgus Ma Ma is in Room 302, Block A, Xintiandi Building, Xibahe South Road 1, Chaoyang District, Beijing. According to Baidu Encyclopedia and Baidu Map, this store is here and still open. Beijing Marvin Foot Department is a professional organization engaged in foot plastic surgery, mainly engaged in the correction of hallux valgus, hallux valgus hypertrophy, foot width contraction, fine long toe shortening and toe deformity.