Introduction to the stele gallery of Sun Tzu's Art of War: The stele gallery in Sun Wu Garden covers an area of ​​more than 1,300 square meters and is in the shape of "Hui". On the stone tablet in the middle is Mao Zedong, the older generation of revolutionaries, who read Sun Wu's famous saying "Know your enemy and know yourself, and you will never be in danger in a hundred battles." The entire stele corridor is composed of three versions, all of which are made of black marble. On the front is a Chinese stele, with a total of 6,097 characters in the text. It was rewritten by the late Suzhou calligrapher Cheng Keda based on the annotations of Emperor Wu of Wei.