I think Shijian along with Yaogan series of satellite are spy satellite
"The satellite, also known as ChinaSat-16, was shot into geostationary orbit more than 35,000 kilometers above the surface of the Earth atop a Chang Zheng (Long March) rocket from the Xichang Satellite Launch Center in southwestern China’s Sichuan province last April."
Wouldn't it be somewhat difficult to spy on things clearly when you're 35,000km up, especially when compared with low orbital satellites at maybe 30x closer?