Yu's doctor hurriedly stopped him and said, "No, Yu and Guo are close neighbors. Without their lips, their teeth would be frozen off! So helping each other and saving each other is to live together, not to give each other small favors. If Guo dies today, he will die tomorrow. Never borrow money from the state of Jin. "
Those who don't listen think that Jin is a big country. People offered to send jade to make friends with us. Can't we borrow a way? So he accepted the jewels and let the Jin army pass through Yuzhou unimpeded and attack the State of Guo.
Gong clearly knew that the day of Yu Guo's demise was not far away, so he soon left Yu Guo with his family.
Sure enough, the Jin army successfully achieved the goal of destroying the country. On the way back to the army, those who personally went out of the city to meet the enemy were caught and easily eliminated.