A production of The Documentary Guild in association with WGBH Boston for Nova ; WGBH Educational Foundation ; Executive editor, William Grant ; executive producer, Paula S. Apsell ; written, produced and directed by Rob Whittlesey and Noel Buckner
Zhong gong Gansu Sheng wei xuan chuan bu, Zhong yang dian shi tai ke jiao ping dao lian he chu pin ; Beijing bo jing wen hua chuan bo you xian gong si cheng zhi