Shiqi Subdistrict or Shiqiqu Subdistrict is located in the center of Zhongshan city and covering an area of 49.72 square kilometers. Kei River is the mother river of Shekki district. The district administers 19 neighborhood committees, and is considered the city's center for commerce and culture. According to a 2006 census, the district had a permanent population of 169,400 and migrant population of 40,900. Shekki District has a national-level private enterprise industrial park—Guangdong Zhongshan Industrial Park. Furthermore, the district has currently 20 commercial networks, such as major marketplaces, logistic centers, and shopping malls. One study in 2006 finds credits the district with 11767 business enterprises.