The new official said a word casually when he saw the official seal. Why did Zhu Yuanzhang become so angry?

The reason why Zhu Yuanzhang was furious was because the new official Lu Xiong was too upright, which led Zhu Yuanzhang to think that he was making trouble with Tai Sui and bullied him for being illiterate. Lu Xiong was originally very admired by Zhu Yuanzhang, because this Lu Xiong was a particularly talented and upright official, and he could write books. Later, Zhu Yuanzhang sent him to be the prefect of Gunzhou, but Lu Xiong unexpectedly discovered that the words on the official seal were printed incorrectly, and Yan in "Yanzhou" was printed instead of Gun in "Gunzhou".

Originally, it would be fine if Lu Xiong made a mistake, because the official seal of the Ming Dynasty was printed based on the appointment edict of officials. As long as Lu Xiong did not report it, the people under him would have nothing to say. The appointment edict given by Zhu Yuanzhang to Lu Xiong clearly stated that Lu Xiong was appointed the magistrate of Gunzhou, Shandong, so the person who made the official seal directly printed it as the magistrate of Gunzhou. But Lu Xiong, as a scholar and a prefect, simply couldn't stand the fact that the official seal was printed incorrectly.

So Lu Xiong wrote a memorial to the emperor to report the error, and asked Zhu Yuanzhang to correct it and rewrite the edict so that he could engrave a correct official seal. Although Zhu Yuanzhang knew that he had written it wrong, he still wanted to save face! If he, a man who personally conquered the world, could even get the names of places wrong, wouldn't he be laughed at by all the ministers in the dynasty? How could Zhu Yuanzhang look good in this way? In addition, the word "gun" and the word "gun" are homophonic. In Zhu Yuanzhang's eyes, Lu Xiong meant to get him out! Zhu Yuanzhang originally didn't want to see civil servants, but now he was humiliated by Lu Xiong, so he beheaded him in anger.

So, Zhu Yuanzhang became furious in the final analysis because he was saving face, because Lu Xiong pointed out that he had written "Gunzhou" as "Yanzhou", and he couldn't lose face. Moreover, this Zhu Yuanzhang didn't read any books when he was a child. Talking about words in front of him is just asking for death.