Сичэн
The Mosque is located in the Niujie area of Beijing's Xicheng District, the spiritual centre for the 10,000 Muslims living in the vicinity and it is the biggest and oldest one in Beijing. It was within the Xuanwu District before it merged into Xicheng in 2010. Niujie in Xicheng District, where the mosque is located, is the largest area inhabited by Muslims in Beijing.