First, the planning of Hengshan Mountain.
As Qi Xianggong, Guan Zhong has always planned to conquer Hengshan, which is famous for producing weapons. But Guan Zhong has always been good at defeating the enemy without fighting.
Before sending troops, he sent people to Hengshan to buy weapons at a high price, so that the people of Hengshan gave up farming and made weapons instead.
Later, Guan Zhong deliberately raised food prices, making Hengshan and several neighboring countries sell food to make money. However, when Hengshan's grain was almost sold, Guan Zhong suddenly stopped buying and attacked Hengshan in the summer when the grain was not mature. At this point, Hengshan, without weapons and food, could only surrender. This classic case can be called the classic battle of ancient coins.
Second, the old horse knows the way.
Qi sent troops to attack the solitary bamboo country, which was to lure Qi troops into the desert and then escape. It's getting late at the moment, with yellow sand all over the sky and a chill. The Qi army lost its way and was at a loss. At this critical moment, Guan Zhong designed an old horse and knew how to lead the army out of the predicament.
Third, Guan Bao's friendship.
Guan Zhong and Bao were good friends, but later they went into business. Guan Zhong always gave himself more money, but Bao was indifferent and considerate of the poverty of Guan Zhong's family. Later, when the two men assisted their respective masters, Bao also came forward to save Guan Zhong, and strongly recommended Guan Zhong to the King of Qi, so that he could become the prime minister of Qi. This profound friendship has become a much-told story for later generations.
At the end of the Warring States period, Le Yi, a military strategist, assisted the weak Yan State at that time and became a general. He commanded the combined forces of Zhao, Chu, Han, Wei and Yan to conquer Qi, and even seized 70 cities of Qi, almost completely destroying the powerful Qi at that time, creating a classic example in the history of China. This also makes Le Yi as famous as Guan Zhong. Both of them are great talents who have helped the country and made great achievements.