You are absolutely right. Kind people often suffer greatly in relationships. Just give without getting anything in return. Finally, the story of the farmer and the snake and the story of Mr. Dongguo and the wolf were performed. You saved others, only to have them bite you viciously. You don't even have the strength to crawl out anymore. So as a person, simple kindness is not enough. There also needs to be a hook. Only in this way can you protect yourself and avoid getting hurt. Many tragedies in this world are caused by being too kind. So keep your eyes wide open. It is very necessary not to abuse your kindness casually.