1. Always keep three things secret: your emotional state, your emotions, and what you are going to do.
2. It is not the uneducated people who are difficult to communicate with, but the people who have been indoctrinated with standard answers.
3. Regardless of any relationship, as long as the other party does not consider your feelings and interests before doing something, you should stop in time.
4. For those who have no interests, just show your politeness.
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