People always make various promises when they are at their most difficult moments, hoping to receive help, because the immediate predicament is enough to make them think irrationally, and at this time they have no chips to weigh the pros and cons. Once they get through this stage, when they have the initiative and the right to choose, they will no longer beg others meekly. At this point, maintaining dignity and protecting interests are truly important. Moreover, desire and greed drive them not to easily give up the benefits they have already obtained. Therefore, I will only discuss specific matters with people who hold chips in their hands; I will not trust anyone's promises about the future. Another very important thing is that humans are inherently deceptive; you cannot definitively judge who is telling the truth and who is lying. So the best approach is to prepare for the worst, and then decide whether to get involved. Everyone who has suffered great losses in this regard has never experienced the taste of being deceived and does not know the ugliness of human nature. Once they understand, they dare not trust again.