Why did Liu Bowen tell his family that the book was in the coffin and the emperor dared not touch my grave?

This book is Daming Law, written by Zhu Yuanzhang himself, which explicitly mentions that all grave robbers will be executed in the end. Because Zhu Yuanzhang hated grave robbers at that time, he made laws for this purpose. After Liu Bowen's death, Zhu Yuanzhang put this book in his coffin in order to prevent second guessed.

During Zhu Yuanzhang's founding of the Ming Dynasty, Liu Bowen's contribution was so great that he could be regarded as a founding hero. On weekdays, Zhu Yuanzhang also valued him very much, and later revised Daming Law with Li Shanchang. However, due to Zhu Yuanzhang's long reign, he began to doubt Liu Bowen. After all, Liu Bowen's ability is too great, which makes Zhu Yuanzhang timid to this person.

With the growth of age, Liu Bowen's health is getting worse and worse. He felt that his time was running out, so he chose a cemetery for himself in the suburbs in advance. But Hu, who was jealous of him, told Zhu Yuanzhang that the cemetery chosen by Liu Bowen was imperial, so he should be alert in advance. Zhu Yuanzhang has been suspicious and very angry. He deprived Liu Bowen of the right to use the land because it was about to be used by the imperial court, which made Liu Bowen very helpless. This made him begin to understand that Zhu Yuanzhang no longer trusted himself, so he resigned early and went home.

Later, Liu Bowen became very ill and time was running out. At the same time, he also knew that Zhu Yuanzhang would not let himself go easily, so he told his family before he died. When I die, I will put this book Daming Law in my grave, so I won't be afraid of Zhu Yuanzhang touching my grave. When my family heard this, they were puzzled, but they did it anyway.

Sure enough, shortly after Liu Bowen's death, Zhu Yuanzhang was told that the cemetery chosen by Liu Bowen was a treasure trove of geomantic omen, so he sent someone to dig his grave. However, before the coffin was opened, they found this book, Daming Law, which contained a line:? Open the coffin and see the body die? . When Zhu Yuanzhang knew about it, he stopped digging graves.