In 286 BC, the State of Qi took advantage of the civil strife in the State of Song and quickly sent troops to destroy the State of Song with lightning speed. The reaction of all countries is very strong, as if the next one to be destroyed is their own country. The countries with the strongest sense of crisis are Yan, Zhao and Wei bordering Qi. As a result, these three countries, together with Chu and Han, launched a five-nation war against Qi.
Due to the neat morale of the five-nation allied forces and the proper command of Le Yi, commander-in-chief of the Yan Army, in a short time, the allied forces let Qi taste what fear is. The five-power allied forces captured more than 70 cities of Qi in one fell swoop, and almost made Qi perish. Every road, Qi paid a heavy price to get peace.
Qi lost nearly three-fifths of its territory after the five countries cut Qi, and there is almost no possibility of recovering it. In this case, Qi can't really recover even after a hundred years' rest. Although he has more than 70 cities, he finally won it back bit by bit. Because of the war, many cities were destroyed and a large number of people died. Qi paid a painful price. After more than 50 years, Qi has not recovered.