Zhong dong ku er de wen ti yan jiu = Zhong dong zheng zhi zhuan ti yan jiu = Zhong guo du sheng zi nv wen ti yan jiu = Shen ji du li xing wen ti yan jiu = Zhong guo hai dao qian yan wen ti yan jiu = Zhong guo jing ji nei wai jun heng wen ti yan jiu = Zheng dang zheng zhi yu min zhu wen ti yan jiu = Zhong guo lv se jiu ye yan jiu = Zhong yi ying yu fan yi yan jiu = Zhong guo nong min gong de zhu fang wen ti yan jiu =