After Yuncheng magistrate read the official document, who asked him to copy it?

In the book "Water Margin", in the twentieth time, the righteous man in Liangshanbo respected ancient prose, and Liu Tang in Yuncheng County walked on a moonlit night. It was written like this: Yuncheng County ordered Song Jiang to copy a copy of the official document and go to the villages to guard himself.

Song Jiang is a character in the Water Margin, also known as the Water Margin, the legend of loyalty and the whole story of the Water Margin. It is one of the "Four Classical Novels" of China's classical Zhang Hui novels, written by Shi Naian in the late Yuan Dynasty and early Ming Dynasty. It is the first Long Zhanghui novel with the theme of peasant uprising in China.