The helicopter, on a truck, seems to be in the process of being moved even if it is at least strange that it is is not hidden below a protective covering, as happened for other mysterious choppers spotted on the move in China.
It’s not easy to guess how Beijing put their hands on the helicopter. It could be one of the U.S. Army Apaches downed or crash landed in Iraq, that was later fixed and exported in China.
A famous episode is the one of the AH-64 shot down intact during the 2003 attack on Karbala, during which the two US pilots were captured and shown on television along with the helicopter: still, Pentagon later stated the Apache had been destroyed with an airstrike the day following the capture.
Image via Chinadefense blog. H/T to Ugo Crisponi for the heads-up