Jian Leng Work in China has only been open to foreigners since the middle 1990s. The Qingling Mountains are the boundary between the two halves. Longshan Peiligang is the beginging of the Neolithic.
Civilization usually means urbanization.
Shang is the first civilization in china verified both archaeologically and historically. Xia is older, but no oracle bones have been found. The capital of Shang was revealed by finding oracle bones. The old course of the Yellow River is 20 kilometers north of the core Shang area. Archaeologists didn t find pre-Shang sites in the region.