When it comes to the "Art of War of Sun Tzu", Chinese estimated that he was written by Sun Wu, a Qi man in the Spring and Autumn Period, and was the earliest military book in China.
What about Sun Zhen? Is The descendant of Sun Wu, he was born more than 100 years after Sun Wu's death, grew up in Acheng, Juancheng (both in the territory of present-day Shandong), according to legend, Sun Zhi once learned the art of war from Ghost Guzi with Pang Juan, they were all classmates, understanding or in-depth, Pang Juan knew that Sun Zhi's talent was stronger than his own.
At that time, King Hui of Wei was recruiting talents, Pang Juan met King Hui of Wei under the wrong recommendation of King Xiang, after talking, King Hui of Wei liked Pang Juan more, and later Pang Juan also showed superb military ability in wars against Qin and Han, so he became a general in the State of Wei, worried that Sun Zhi's talent was stronger than his own, so he secretly sent someone to find Sun Zhen, and under the pretext of the crime, he used the punishment and appeasement of Sun Zhen, removed his kneecap, and engraved a letter on his face, making him disabled, because he had been tortured. Therefore, everyone called him Sun Zhen, but the original name was not passed down.
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