Apart from researching the adaptations of this story, the connections between the story's ideal of filial piety and the Chinese ideal, I also put together a dictionary of the vocabulary and a chart comparing erroneous characters. This kind of work takes a lot of effort. Every piece of my later pien-wen research has taken more than five years.
我除了研究這個故事的轉化過程、故事中的孝道和中國孝道有何連繫，也編詞彙字典，做別字、錯字對照表，這樣的工作很花功夫，後來發表的每部變文研究，都花五年以上的時間。