The most brain-burning part of the whole thing is that three people told three completely different stories about the same thing.
Purpose: My brother lied and used real supporting materials?
My brother is greedy and selfish and can't prove his innocence?
When the two brothers were studying, they were unable to make the right choice for the sake of their Chinese-style family relationship. When they can make a choice, they are swallowed up by human desires. It can be said that both of them are selfish people, especially the elder brother who was attracted by moths to the flame for revenge after losing everything.