First of all, let's talk about the background and process of expulsion: before this, there was a spy case in Qin, that is, South Korea sent a man to Qin as a spy. This man's name is Zheng Guo, and he is a water conservancy expert. The purpose of South Korea is to let Qin develop farmland water conservancy, which will consume Qin's financial, material and human resources and make Qin have no energy to attack South Korea. When Zheng arrived in Qin, he persuaded Qin Shihuang to overhaul water conservancy. Later, when Qin Shihuang learned about it, he arrested Zheng. Zheng admitted the fact and gave an explanation. Qin Shihuang did not kill Zheng, but still asked Zheng to repair water conservancy. The old nobles of Qin always rejected the people from the six countries and hated them for robbing them of their jobs, so they took advantage of this incident and wrote to Qin Shihuang: People from the six countries came to Qin for their own country, with the aim of alienating the internal relations of Qin, and Zheng was an example. Hearing these slanderous remarks, Qin Shihuang, in a rage, ordered the expulsion of the people of six countries, and the expulsion occurred. Li Si, a native of Chu, is certainly one of them. Li Si returned to the State of Chu and was outraged, so he gave Qin Shihuang a memorial, which is the famous "Exhortation and Expulsion".

2. The main reason why Zhuke Shu can convince Qin Shihuang is that there are three main points in Zhuke Shu that touched Qin Shihuang. First, Ke Qingshi's contribution to the State of Qin. He listed Bixi, Shang Yang, Zhang Yi of Qin Huiwen, Qin's and so on. Although these people are not from Qin, they have made great contributions to the rise and hegemony of Qin. In fact, this is putting facts and making sense. Qin Shihuang was a wise man, and he understood it as soon as he heard it. The second point: the pursuit of customers is more important than people. What he means is that Qin does not exclude the treasures of the six countries (that is, the well-known Choi), so why should we exclude people from the six countries? As we all know, Qin Shihuang was bent on unifying the six countries and needed talents urgently. For treasures, Qin Shihuang loved talents more. Li Si said that on purpose. The third point: expelling guests is to help the six countries. Reese said that people from the six countries could not stay in Qin, so they had to go back to their own countries and help them attack Qin. Actually, this is more deadly. Speaking of Qin Shihuang's heart, in fact, Qin Shihuang was most worried about the six countries uniting to attack Qin. So with these three points, Qin Shihuang immediately revoked the marching order and reused Li Si. Of course, this is not entirely due to Reese, mainly because Qin Shihuang himself was an open-minded emperor of coachable. Otherwise, it will not work.

As for the significance of reference, of course, there is: first, putting facts and reasoning are the common ways for us to write argumentative papers, but in peacetime, you should remember to accumulate. I used to take notes. When I see stories, characters and famous sayings with unique reasons, I will write them down, and then write a little feeling, that is, comment on this matter, this person or what this sentence tells us. Look at the composition before the exam, why worry that the argumentative paper has no material.

The second point is to grasp the core we want to discuss and provide all kinds of arguments, both positive and negative.

I think he taught us more about how to persuade others or lead others. For example, the reason why Li Si succeeded in remonstrating was because he could understand Qin Shihuang's mind, know what he wanted, and then follow his ideas to convince people with reason and move people with emotion.