Title: Er tong xin li xue
Description: Ben shu fen wei ba ge bu fen,Nei rong bao kuo:er tong xin li fa zhan de ji ben li lun wen ti,Er tong xin li fa zhan de ying xiang yin su,Er tong gan zhi jue yu dong zuo fa zhan,Er tong zhu yi yu ji yi de fa zhan,Er tong yu yan yu si wei fa zhan deng.
Subjects: Er tong xin li xue