In memory of Professor Liao Hua Yang In memory of professor Xu Guozhang 并列题名:In memory of professor Xu Guozhang in memory of professor Valentin Afraimovich 师范之师：怀念孟宪承：in memory of professor Mengxiancheng In memory of professor zhang wei's 100th anniversary In memory of memory：a romance Selected academic works of professor Wang Xiaoyang