Xiang gang qing shao nian wen ti tan suo/ Qing gan- qing shao nian xin li xue Da ying qing shao nian bai ke quan shu/ Bei jing qing shao nian yan jiu suo. Qing shao nian wen ti tan jiu/ Pu gong ying shao nian wen xue cong shu Pu gong ying shao nian wen xue cong shu. Da ying qing shao nian bai ke quan shu : Xiang gang qing nian qu shi fen xi/ Xiang gang qing nian qu shi fen xi =