Xiao Rang is one of the heroes of Liangshan 108. He can not only copy this one, but also make a good gun and sword. But the title of his master's graduate student was really obtained because of his copying. Not only can you write beautiful fonts, but you can also copy the fonts of various calligraphers. Not only can you copy, but what you copy can be confused with the original, so you can get the title of calligraphy master. Xiao Jean can go to Liangshan because of his good handwriting.
Song Jiang is an honest man, so he was framed in Jiangzhou. These two people are Cai. On his way to death, Song Jiang's letter to Cai Jing was intercepted by Liangshan heroes. They let Xiao Jean imitate Cai Jing's reply, thus saving Song Jiang. After this incident, Wu Yong was afraid of retaliation for Xiaorang, so he sent someone to take Xiaorang's family to Liangshan. Since then, Xiao Jean has officially become one of the Liangshan heroes.
After Xiao Rang went to Liangshan, when Wu Yong and others planned to attack Zhujiazhuang, Xiao Rang copied fake documents and ordered Sun Lixian to go to Zhujiazhuang as an undercover, which was not developed by Zhujiazhuang people. Finally, Zhujiazhuang won, and Xiao Rang copied the county magistrate's documents, inducing Mars and Du Xing to go to Liangshan. In the big episode after the Water Margin, Xiao Jean also copied the gobbledygook and recorded himself as a satellite, so he could dispatch troops. It is precisely because of Xiao Rang's actions that Liangshan heroes can win in many activities, so Xiao Rang can be recognized as a surname by Cai Jing.