According to domestic media reports, recently from the Guangxi Institute of cultural relics protection and archaeology, Chinese researchers have made great achievements in their research on the yahuaidong site in Longan County, Guangxi Province. They have discovered tombs and human skull fossils about 16000 years ago, as well as rice phytoliths, which contain cultural relics of different periods of the old and Neolithic age. Yahuaidong site is located on a remote hill in Bolang village, Qiaojian Town, Longan County, Guangxi Province, 13 kilometers away from Longan County. < p > < p > yahuaidong site was discovered in 2014, with a total area of more than 100 square meters. It is the second Paleolithic tomb found in China after the tomb of the cave man at the top of the mountain, filling the gap of prehistoric culture in the Youjiang River Basin. The excavation started in June 2015 and is divided into four areas: A, B, C and D. It is the only complete human skull and body bone fossil with exact stratigraphic horizon and reliable dating found so far in Lingnan area. It is of great academic value to study the diversity of modern population in the early Late Pleistocene, the migration and exchange of human groups, and the burial customs of late Paleolithic people Value. Xie Guangmao, a researcher at Guangxi Institute of cultural relics protection and archaeology, said: “through the study of these human fossils, especially human skull fossils, we can understand what the physical characteristics of human beings were in Lingnan and South China about 16000 years ago. Through the skull study, we can know what he looks like and what kind of a person he is In addition, the phytoliths of the genus Oryza were discovered 16000 years ago, which indicates that the prehistoric human began to use wild rice more than 16000 years ago, which provides valuable data for the study of the history of prehistoric human using wild rice. [image] Google secretly tests 6GHz networks in 17 states of the United States