Qilong is a township of Qidong in Jiangsu, China. The land it occupies was formerly Yonglongsha, a separate island in the Yangtze River delta, but reclamation projects and natural deposition of sediment have joined it to Chongming Island, where it now forms a pene-enclave within Shanghai's Chongming County. Its population was 3436 at the time of the 2010 Chinese census. Qilong's name—literally "opening prosperity"—is a compound of contracted forms of its county and its former island.