Written historical materials can be revised. There is a saying that history is written by winners. There are many examples of tampering with history in history Li Shimin, the acknowledged monarch, wrote his two brothers badly.

As we all know, there are not as many books in Sikuquanshu that have been repaired as those that have been destroyed. Most history books have been tampered with, so we should look at them dialectically and not believe them all.

Unearthed cultural relics and underground sites rarely have such problems. Therefore, in archaeology, the priority and credible historical materials are unearthed cultural relics, not existing historical records.