The strongest alliance is mostly because of interests. It is easy to understand that selfishness is human nature. No matter from which aspect, people want to maximize their interests, no matter how selfless, they are all for self-satisfaction. The most decisive separation is mostly because of emotion. Needless to say, all fatal injuries are caused by emotions. The easiest way to reconcile is a hundred years of bloody war. The Hundred Years' War between Britain and France lasted 1 16, which is the longest war in history. So what? It was the strongest alliance during World War II, and some Yuanmingyuan caught fire and plundered the wealth of other countries. The last thing that can't be dispelled is half a sentence, and people often forget half a sentence of others, which is hard to let go.
What he said is human nature, not absolute. Combine your own experience and experience to get to know it slowly! !