After Qin Shihuang burned books, how did the ancient books before Qin Dynasty come down?

In order to better manage the unified six countries, Qin Shihuang chose many measures, such as implementing the county system, or burning books here to bury Confucianism. However, we know that although books were burned to bury Confucianism, some pre-Qin classics were successfully handed down. These pre-Qin classics were circulated in many ways, and most of them were hidden by scholars at that time.

At that time, after burning books and burying Confucianism, all the classics in the world were not burned. Qin Shihuang's goal is only to target the people, and many precious classics are hidden in the hall of the king of Qin in the Qin Dynasty. But then Xiang Yu captured Xianyang and burned the whole Xianyang Palace with fire, basically burning all the books and records preserved in the Qin Dynasty.

Of course, not all of them were burned. After all, there are still books from pre-Qin to now, and it is very lucky to be handed down. At that time, he should be called Dr. Fu Sheng. He was also anxious to learn that Qin Shihuang ordered the burning of books to bury Confucianism. In the face of Qin Shihuang's order to carry books, he chose to keep books privately. The way to keep them is to hide some important books in his own wall, but there are not many books hidden in the wall, so he can only choose some important books, including Shangshu.

Later, after the demise of the Qin Dynasty and the establishment of the Han Dynasty, this book-carrying order was abolished. At this time, this Fu Sheng is still alive, but he is very old. So he dug up the wall and took out the books inside. However, due to the long time, the books inside are still seriously damaged.

At this time, the Han Dynasty also knew, so Chao Cuo came to Fu Sheng to sort out and study these classics. So in this way, I sorted out many ancient books including Shangshu. Fu Sheng's situation was also very common at that time, and many folk scholars chose to use similar methods to preserve those ancient books.