Zhang Yi is a descendant of Duke Wei, and Su Qin is a disciple of Guiguzi. Academically, "Su Qin is not as good as Zhang Yi".

After Zhang Yi became a successful lobbyist, Qin Huiwen and Wang Sannian (47 years, 322 years before), Zhang Yi became Wei. Gongsun Yan was supported by South Korea, replacing Zhang Yi as Wei Xiang. Zhang Yi was not used by Wei Huiwang, and later went to Chu as a guest of Zhao Yang, the prime minister of Chu. Once I had a drink with the prime minister of Chu. Later, Chu Xiang lost a piece of jade. Chu Xiang's servants thought that Zhang Yi was "poor in appearance" and must have done it. They hit him several hundred times. Yi cheung refused to accept, and Chu Xiang let him go. Zhang Yi's wife said indignantly, "How can you be so humiliated if you don't study and lobby the princes?" Zhang Yi replied, "Do you think my tongue is still there?" His wife smiled and said, "Still there." Zhang Yi said, "That's enough."

Later, the State of Qin reused Zhang Yi and persuaded other countries to help the State of Qin attack other weak countries, which was called "Lian Heng" in history. At this time, Gongsun Yan left the State of Qin, entered the State of Wei, and sold "Lian" to Wang Wei.

3 18 years ago, Gongsun Yan launched the "Five Countries Attacking Qin" by Wei, Zhao, Han, Yan and Chu, with Chu Huaiwang as the leader, lobbying the barbarians to attack Qin, and defeated Qin Jun in Li Bonian. However, after the defeat of Hanguguan, the five countries successively withdrew their troops.

In the 14th year of Yuan Geng, the king of Qin Huiwen (the first 3 1 1 year), Qin Huiwen died and his son Qin Wuwang succeeded him. There is a gap between Wu and Zhang Yi.

In the first year of King Wu (3 10 BC), Zhang Yi left Qin for Wei, and died in Wei in May. Jing Chun, a disciple of Mencius, said, "Gongsun Yan and Zhang Yi are real men! Anger is the fear of the princes, and peace is the destruction of the world. " There are ten Zhang Zi in Hanshu Yiwenzhi.

Su Qin, the prime minister of the six countries whom I have never met before.

During the Warring States period, feuds among princes continued. Among them, a group of counselors and military strategists galloped freely, showed off their cleverness and made a name for themselves. Among these counselors, Su Qin is undoubtedly a very successful one. With his excellent eloquence and extraordinary strategy, he persuaded the kings of the six countries to unite and became the prime minister of the six countries.

Su Qin studied under the famous debater Guiguzi in his early years. After studying, he traveled for several years, hoping to get an official position by his eloquence, but found nothing. Finally, he came home penniless. His family and even servants laughed at him and looked down on him, thinking that he could not make a living by gossiping. Su Qin's self-esteem was hurt, and he made up his mind to fight for breath and make some achievements.

Since then, he has been eager to learn. By chance, he got a book, which later proved to have changed his life. This book was approved by Mr Guiguzi, and it is said that Yin Fu was written by Jiang Taigong, the pioneer of the Western Zhou Dynasty. After getting this book, Su Qin began to devote himself to it. A year later, Su Qin felt that he had mastered the knowledge in the book, which could be used to lobby monarchs. He started a new round of lobbying career.

As a lobbyist, Su Qin was unlucky. He went to Qin and Zhao successively, lobbied the monarchs of the two countries plausibly, and shouted for his strategy of governing the country, but he was turned away. Su Qin went to Yan again, and it took a year to finally get a chance to meet Yan. He told Yan about the crisis in Yan State and pointed out the benefits brought by the integration policy to Yan State. Yan was very moved and immediately adopted Su Qin's suggestion. He also appointed Su Qin to take Yan Guojun's letter to persuade the monarchs of the other five countries to stand on the same front and fight against Qin. In this way, Su Qin finally got rid of bad luck and started the great road of strategizing.