Title: 20 shi ji shi da gao ji shu bing qi
Description: Ben shu zhuo zhong jie shao 20 shi ji yi xie gao ji shu wu qi fa ming he yan zhi de li cheng . bao kuo lu, hai, kong, tian gao ji shu wu qi ji he, sheng, hua wu qi.
Subjects: Ying yong, Gao ji shu, Wu qi
Places: Shi jie
Time periods: 20 Shi ji .