Title: Shi qi shi yong hen ji xian wei guan cha de yan jiu
Description: Du shu suo de chu de jie lun, dui wo men ren shi ren lei wen hua de fa zhan yu zi ran huan jing de hu dong yi cun guan xi, dang jin ren lei dui zi ran huan jing de kai fa yu bao hu jiang you suo qi di.
Subjects: Stone implements