In the letter, Chun Shen Jun told the king of Qin that Qin Chu would lose both sides in the war, so that other vassal states could take advantage of this. It is better to unite with Chu to deal with other vassal States first. As? Four sons of the warring States period? One of them, Chun, is the most special of the four people, because he was not born in a noble family like the other three, but only a civilian child. Why was Chun Shen Jun, who came from humble origins, reused by the King of Chu and was named the Emperor's Father? Four sons of the warring States period? One reason is his outstanding ability.

Before Huang Xie became the Shen Jun in spring, he traveled around the world. During his trip, he learned from many people, and this trip also made him gain a lot of knowledge. Returning to Chu after the tour, Huang Xie was appreciated by King Xiang of Chu. At that time, Chu and Qin were the most prominent vassal States, so wars often broke out between the two countries. However, since the late reign, Chu has been at a disadvantage in the struggle between the two countries, and this disadvantage is more obvious after King Xiang of Chu acceded to the throne. Just when Chu was forced to move the capital again because of being defeated by Qin, King Xiang of Chu decided to make peace with Qin, and then Huang Xie was appointed as the envoy to Qin.

Judging from the situation at that time, in order to further defeat Zhao, Qin also relied on its own strength and asked Han and Wei to jointly attack Chu. Just when they wanted to send troops to Chu according to Qin's orders, Huang Xie arrived in Qin. Huang Xie was very worried when he learned of this plan of Qin. He wrote a letter to Zhao Haoqi of Qin State to solve the dilemma of Chu State. To sum up, the main content of this letter is: Chu and Qin are equally powerful, and Qin's attack on Chu is bound to suffer heavy losses. In the case of Chu and Qin, Han, Wei, Qi and other vassal States are likely to take advantage of the situation and enjoy the benefits of fishermen.

Huang Xie told Qin Zhaowang about the harm of Qin's attack on Chu, and finally suggested to Qin Zhaowang that Qin Chu and China should jointly deal with other vassal states. Zhao Haoqi of Qin was persuaded by this suggestion, so he cancelled his plan to attack Chu.