Peking Man Site at Zhoukoudian is an important Paleolithic site; this site was first excavated in 1927, in a cave on Dragon Bone Hill at Zhoukoudian, southwest of Beijing. According to the study of cultural deposits, Peking Man lived between 700,000 and 200,000 year and belongs to the Stone Age. Their mainly methods of stone processing are hammer method, followed by hit method and occasional anvil strike method. Peking Men are the first to use fire, and hunting large animals. According to the statistics, Peking Men has a short life, 68.2% died before the age of 14 and less than 4.5% can live more than 50 years old. Fossils of primitive men living 20,000 years ago were excavated in 1930 near the top of Dragon Bone Hill, and were named "Upper Cave Man". Fossils of New Cave Man were found in 1973, which were believed to have lived in the period between Peking Man and Upper Cave Man, showing the continuation and development of Peking Man.