Title: Yu yan gu shi zhong de jing ji xue gui ji
Description: Ben shu tong guo jiang shu jia yu hu xiao de yu yan de xing shi, Ba sheng huo zhong de jing ji xue yuan li zhan shi ji da jia, Shi du zhe zai yue du feng qu sheng dong de yu yan de tong shi, Le jie dang dai jing ji xue de dao li.
Subjects: Jing ji xue, Tong su du wu