On the day of Luo Jintang's doctoral thesis examination, his doctoral thesis was titled "Examination of the Existing Yuan People's Zaju Skills", which he spent several years writing. There are 162 Yuan Zaju dramas in the world, so it is necessary to find out the source of each drama, because I don't know which one the examiner will ask.

Because Hu Jintang was the first doctor of literature, every examiner showed the highest standard, and he was lucky to pass one by one. Hu Shi, sitting on the examiner's bench, has a serious expression. After two hours of defense, Luo Jintang was about to breathe a sigh of relief when suddenly Hu Shi raised his hand and asked for an extension of the exam. Decades later, Luo Jintang, who has become an academic authority, still remembers how determined Hu Shi's expression was.