After returning home in 1970, he taught in the Chinese department at his alma mater and wrote his doctoral dissertation. He received his doctorate in 1974 and was appointed a full professor two years later.
一九七○年學成歸國後，一邊在母校中文系任教，一邊寫博士論文；他在一九七四年得到博士學位，兩年後升任正教授。