According to the Municipal COVID-19 Prevention and control Headquarters, a total of 7 novel coronavirus positive cases were reported in Tianjin on January 31.Among them, 4 cases were detected at isolation sites in Hebei district, 2 in Hongqiao District (associated with confirmed cases in Hebei District), and 1 in Jinnan District.The seven people have been transferred to a designated hospital in the city for further diagnosis and treatment.Further work is under way.Source: Jin Yun review: Wang Shaoyun braided hair: Wang An Material collation: Xu Xiaowei, Wang an