Title: Ni bu ke bu zhi de 50 ge shu xue zhi shi
Description: Ben shu tong guo 50 pian duan wen, jie shao liao shu xue de qi yuan, xiang dui lun, hun dun li lun, shu du, fu li, fei ma da ding li deng.
Subjects: Shu xue, Pu ji dou wu .