Liu E's novel Travel Notes of Lao Can is one of the four condemnation novels in the late Qing Dynasty. The book "Twenty Chapters of * * *" was published in the bimonthly issue of Xiu Xiang Novels in the 29th year of Guangxu (1903). 13 times was suspended for some reason, and then reloaded in Tianjin Daily.

Liu E also wrote the sequel to Travel Notes of Lao Can, which was written between the 31st year of Guangxu (1905) and the 33rd year. According to Liu, * * * has 14 times, and there are 9 times left today. 1934, published four times in the semi-monthly Human World, and the following year, Liangyou Book Company published six singles. 1962 The Travels of Lao Can published by Zhonghua Book Company included the last three times. In the first six episodes of the sequel, although there is also the content of exposing the abuse of women by bureaucratic children, it is mainly through the love story of a nun in Taishan Doulao Palace and her in-depth and subtle ideological activities, as well as Chi's words and deeds, that the wonderful truth of enlightenment is promoted. The last three chapters describe that old disabled people go to hell to punish evil and promote good.

In addition, there are more than 4700 words of external compilation, written after Guangxu thirty-one years.