Experts on the Chang'E 1 (China) mission

The Chang'e 1 orbiter was the first of a series of Chinese missions to the Moon. The primary technical objectives of the mission are to develop and launch China's first lunar orbiter, validate the technology necessary to fly lunar missions, build a basic engineering system for lunar exploration, start scientific exploration of the Moon, and gain experience for subsequent missions. The primary science objectives are to obtain three-dimensional stereo images of the lunar surface, analyze the distribution and abundance of elements on the surface, survey the thickness of lunar soil and to evaluate helium-3 resources and other characteristics, and to explore the environment between the Moon and Earth.

From http://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=2007-051A