The Long March 6 carrier rocket with a Zhongzi satellite lifted off from the northern spaceport in Taiyuan at 7:59 p.m. (11:59 GMT).
This is the sixth successful launch of the lightweight rocket and the 379th mission of the Long March family of launch vehicles.
China launched a meteorological satellite from the Jiuquan site in the northwest on Monday and a relay satellite from the Xichang site in the southwestern Sichuan province on Tuesday.