Huachang street community. Triangle building is a building in Yushu city. According to Baidu map, it is located in Changhua Street, so it is within the jurisdiction of Changhua Street community. Yushu city is a county-level city under the jurisdiction of Jilin Province, managed by Changchun City, located in the hinterland of Songliao Plain and the center of the triangle formed by Changchun, Jilin and Harbin.