"Profile of Chengqu, Changzhi" (in Chinese). Official website of Chengqu Government. August 29, 2008. Archived from the original on March 4, 2011. Retrieved 2011-04-17.
web.archive.org
"Profile of Chengqu, Changzhi" (in Chinese). Official website of Chengqu Government. August 29, 2008. Archived from the original on March 4, 2011. Retrieved 2011-04-17.