Xi fang jing ji xue

xin xing Pan, zhong de Zhang

Ben shu jie shao xi fang zhu liu jing ji xue de ji ben yuan li, di yi zhang gai shu cong zheng ti shang jie shao xi fang jing ji xue, di er zhang dao di qi zhang wei wei guan jing ji xue bu fen, di ba zhang dao di shi yi zhang wei hong guan jing ji xue bu fen.