On October 19, the Aerospace Development Committee internally initiated a tender for the lunar rover.
In 2013, the space agency had already sent Chang'e 3 to the Moon, carrying the Yutu lunar rover, which was a very successful lunar surface exploration.
However, manned landing required even more careful confirmation of the landing site, especially for the selection of the scientific research station. With the start of Project 2921, the goal wasn't just to send a few people and then stop, but to move forward with the lunar surface construction plan.
That required finding valuable landing areas that could generate power on the lunar surface, synthesize fuel, etc. The most valuable of course was the Lunar South Pole, which the scientific community has long rumored to possess precious water resources: ice.
Therefore, the Aerospace Development Committee proposed the "Chang'e 4" plan, to launch another unmanned probe to the Lunar South Pole in search of resources.
