During the Spring and Autumn Warring States period, under the advice of Zou Ji, King Qi Wei opened his mouth widely, offered a reward, and ordered that those who could point out the mistakes of the monarch in person would be rewarded; Those who persuade the monarch in the upper chapter shall give a reward; At the imperial court

During the Spring and Autumn Warring States period, under the advice of Zou Ji, King Qi Wei opened his mouth widely, offered a reward, and ordered that those who could point out the mistakes of the monarch in person would be rewarded; Those who persuade the monarch in the upper chapter shall give a reward; Discuss the mistakes of the monarch at the imperial court or in the street market, and give a reward. At the beginning, the courtiers went to give advice, and the gate and courtyard of the imperial court were as lively as a market every day. After a few days, the number of counselors decreases day by day. A year later, due to the radical improvement of Qi politics, people wanted to give opinions but had no opinions.

When Yan Guo, Zhao Guo, Han Guo, and Wei Guo heard this, they all came to Qi Guo to meet and pay respect. In this way, the State of Qi subdued other countries due to its internal affairs.