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Historical Records, Historical Records, Historical Records, Historical Records, Historical Records, Historical Records, Historical Records, Historical Records, Historical Records, Historical Records, Historical Records, Historical Records, Historical Records, Historical Records, Historical Records These old books were handed down by hand at that time, so many books were lost, such as Cao Cao's Meng De Shu Xin. On the one hand, these books are masterpieces, on the other hand, they are official history, so they have a lot of copies, so they have been handed down.

In addition, the Yongle Grand Ceremony of the Ming Dynasty also made great contributions to the spread of these ancient books, and many old books in the Sikuquanshu of the Qing Dynasty were copied from it.