Take the beautiful jade produced by the weeping thorns as bait and give it to the short-sighted and greedy monarch of the State of Yu as a condition for borrowing Taoist scriptures. When Yu Guojun saw the precious gift, he was elated and readily allowed to come down.

Gong Zhiqi, the doctor of Yu Guo, quickly stopped him: "No, Yu Guo and Guo Guo are close neighbors who are as close as lips and teeth. Without their lips, their teeth will be frozen and lost! Therefore, helping each other to save each other is for the sake of * * * to live together, without giving small favors to each other. If the State of Guo is destroyed today, the State of Yu will surely perish tomorrow. It is absolutely impossible to borrow money from the state of Jin. "

Yu Jun doesn't listen to Gong Zhiqi's opinion, and thinks that Jin is a big country. People take the initiative to send Meiyu to make friends with us. Can't we just take a walk? So he accepted the jewels and let the Jin army pass through the state of Yu unimpeded and attack the state of Guo.

Gong Zhiqi clearly knew that the day of the demise of Yu State was not far away, so he quickly left Yu State with his family.

Sure enough, the Jin army successfully achieved the goal of destroying Guo. On the way back to the army, Yu Gong, who personally went out of the city to meet the Jin army, was caught, and Yu Guo was easily eliminated.