An archaeologist clears a tomb at the site. [Photo/Xinhua]

"This time, we found historical relics of the Paleolithic Age under the relics of the Neolithic Age. The deepest section is more than 10 meters under earth. Such burial- coexistence phenomena are very rare in the country. It is a precious sample to do further research on the culture of upper reaches in Hanjiang River Valley," he said.

Longgang Temple paleoanthropological site, which is located on the southern bank of the Hanjian River in Lianshan Township of Nanzheng County, about 3.5 kilometers away from Hanzhong City in Shaanxi Province, includes pottery workshops, living areas and burial areas.