Since the discovery of the tea town ruins by accident last year, it has attracted the attention of the whole world. Recently, with the unearthed of a large number of exquisite stone tools and pottery, it has once again aroused heated discussions among netizens around the world.A metal file that travels back from modern times. The material, craftsmanship and style of this file are almost the same as modern files, but it is indeed an antiquity more than 10,000 years ago after being identified by experts... Zhang Tian stared at the file on the picturePupil Earthquake: Damn! Isn't this the file from my house!