Chinese scientists will excavate at a cave where the first Peking Man skull was found to try and find more relics of men believed to have lived 770,000 years ago.

The project on the western slope of the Peking Man site will start mid-May and last two months, Gao Xing, deputy director of the Institute of Vertebrate Paleontology and Palaeoanthropology, said.

"The discovery of a skull is like a lottery but it is very likely we will find animal fossils, stoneware and other artifacts," Gao said.