Introduction to the Eight Formations: The legend of the Eight Formations is a formation created by Zhuge Liang during the Three Kingdoms period. It is said that when Zhuge Liang defended the enemy, he used piles of rocks to form a stone formation. According to Dunjia, it was divided into eight gates: Sheng, Shang, Xiu, Du, Jing, Death, Jing, and Kai. It had many changes and could withstand hundreds of thousands of elite soldiers.