The fourth Long March-5 rocket of China's first Mars exploration mission, was vertically transported to the launching area at the Wenchang Space Launch Center in south China's Hainan Province on Friday.
The carrier rocket, coded as Long March-5 Y4, will be launched in late July or early August, according to the China National Space Administration, reports Xinhua.
This is the first time the Long March-5 carrier rocket, currently China's largest launch vehicle, has been put into practical use after three experimental launches.
The rocket is expected to send the Mars probe into the Earth-Mars transfer orbit, which is also the first such mission to be carried out by China's carrier rocket.
China's first Mars exploration mission Tianwen-1 aims to complete orbiting, landing and roving in one mission, and to obtain scientific exploration data on Mars.