Introduction to Jiji Terrace: In the late Eastern Han Dynasty, warlords separated their regimes and merged with each other. In the first year of Jian'an (AD 196), King Yuan Shu of Huainan wanted to attack Liu Bei first to capture Peixian County, and then planned to capture Lu Bu in Xuzhou. He sent General Ji Ling to lead 30,000 elite troops to directly capture Peixian County. Liu Bei was named the governor of Yuzhou, but he only had Peixian County. He had less than 10,000 soldiers. He expected to be defeated, so he asked Lu Bu for help, and Lu Bu camped in the southwest. Early the next morning, Lu Bu held a banquet in the camp, summoned Ji Ling and Liu Bei to have a drink, and advised both sides to stop fighting. Ji Ling did not dare to agree, so Lu Bu ordered angrily to plant a halberd a hundred steps away from the camp gate, saying: "If I hit the branch of the halberd with one arrow, we should separate our troops. If we fail, we can fight in a duel. Anyone who does not obey my words will be killed." And resist it with all your strength!" After saying this, he took the arrow and went up to the stage, and it hit the halberd branch as soon as he fired it. Ji Ling was afraid that Lu and Liu would join forces to attack him, so he stopped his troops and left. This avoided a war disaster in Pei County. For this reason, the Pei people preserved this platform as a historical witness.