First, when the other six countries reformed, the situation was not good and the situation of Qi was good. During the Warring States period, Wei oppressed Chu and Qin, and Wei, Han and Zhao were always in the land of four wars. On the other hand, Zhao has also encountered northern aliens, while Yan has just been defeated by Qi, and their situation is particularly grim, and it is urgent to change the status quo. Only Qi developed well in the Spring and Autumn Period and became the overlord. At that time, Qi's economy was prosperous, its military strength was strong, and the situation at home and abroad was excellent. At this time, they will feel that there is no need to reform.
Second, the geographical position of Qi is very good, and its national strength can also compete with other countries. Qi's geographical position is adjacent to Yan's, which has been defeated by Qi, and the other side of Qi is near the sea, so there is no need to worry about being attacked. As long as you keep the door close to Yan, you have no worries at all. Wei, Han, Zhao, Qin, Yan and Chu are almost three neighboring countries, and there are many struggles among them. At that time, only Qin was able to compete with Qi, but their land was not adjacent. The other four countries joined forces to attack Qi, and Qi could also compete with it. Qi thinks that their capital is so strong and their position is superior, so there is no need to add another piece of reform.
Thirdly, Chyi Chin is not a neighboring country. Qin and Qi are not adjacent. If there is a war between the two countries, the loss will outweigh the gain. Therefore, Qi feels that their relationship with Qin is still relatively good, and Qin cannot wage war against Qi. Qi has always held this idea, so he didn't participate in the political reform.