It turns out that "the study of ancient texts" did not begin until Jia Kui; there was no teacher who taught it in the past. But Du Lin only got one volume, which was by no means as much as what Kong Bi got. Scholars love so much. The "Guwen Shangshu" written by Kong Anguo has been buried in the royal library, and it has never been popular among the people. After the war in the late Western Han Dynasty, it was lost silently. Although Du Lin's volume was annotated by various masters, it has not been passed down to later generations; this may be due to the war in the Three Kingdoms. The luck of "Guwen Shangshu" is really bad. Not only did it fail to show its prominence, but it also suffered from imposters again and again. This existed in the Western Han Dynasty. When Emperor Cheng of the Han Dynasty, because no one understood the "Old Classics and Documents" presented by Kong Anguo, he issued an edict to recruit people who could understand it. There was a Zhang Ba in Donglai who didn't know that Kong Bi's book was still there, so he divided Fu Sheng's twenty-nine chapters into dozens of chapters based on the "Preface to the Book". Said it, added the beginning and end, and compiled it into "One Hundred and Two Chapters of Ancient Classics and Documents". Each article is very short and the writing is shallow. He presented the forged book. The Emperor Cheng used the Kongbi "Shang Shu" stored in the Royal Library to read it, and found that it was totally wrong. Emperor Cheng imprisoned Zhang Ba, but he still kept his book and heard it spread to the world. Later, Zhang Ba's disciple Fan Bing rebelled, and the imperial court destroyed the book; this first pseudo "Guwen Shangshu" was lost from then on.