As both friends of Lu Zhishen, why does Shi Jin always keep a distance from Lin Chong?

Logically speaking, Lu Zhishen's brother should be Shi Jin's brother. In other words, sworn friends are his friends. However, Wu Song, Lin Chong and Lu Zhishen were also sworn brothers. Why did Shi Jin keep a distance from Lin Chong and Wu Song?

It is said that Lin Chong and Wu Song are both highly skilled in martial arts and Tiangang generals. These two people can be said to have great influence on Liangshan. In terms of rankings, they are much higher than Shi Jin. Doesn't Shi Jin want to associate with these outstanding people? And there is Lu Zhishen, the best adapter. Why is Shi Jin unwilling to become brothers with them?

There is a key point here, that is, Shi Jin comes from a wealthy family and has never worried about anything since he was a child. This also means that he does not care about many things. Judging from his life trajectory, almost everything he does is done as he pleases. Even if he makes his old mother angry to death, he is unwilling to change himself. Therefore, the personality factor is very important. It makes Shi Jin rarely have contact with other people, let alone become brothers.

Since relationships are so important, the way to meet new friends is through the friends around you. In The Water Margin, Shi Jin is the best buddy. There is one person who is unique and worthy of acquaintance. Mention, that is Shi Jin. Lu Zhishen can be said to be the best friend with Shi Jin. Not only are the two close in personality, but they also have the same way of dealing with people and doing things. Moreover, the two of them have also experienced the test of life and death. With these friends, his position in Liangshan became increasingly stable, and he soon surpassed Chao Gai's prestige, and finally succeeded in becoming the boss of Liangshan, fulfilling his dream of recruiting people.