Today, 41 years ago, on November 13, 1984 (October 21, 1984), Cheddar was the first to discover ancient stone and Antarctic stone. On November 13, 1984, Chinese technicians discovered ancient stone and Antarctic stone in the northwestern region of Cheddar wood basin about 30,000 years ago. This was recently by reporters at the Chinese Academy of Sciences and the Australian National University in Nanjing jointly organized Chinese-Australian fourth-century research summary academic discussion. Chinese Academy of Sciences Ancient Spinal Animals and Ancient Human Research Institute assistant researcher Yuan Combined pointed out that these stone combinations mainly with scratchers, with the two major systems of Chinese-northern stone culture "Cheddar's first place (Beijing people's site