What villains or treacherous people should you be careful about around you?
As the saying goes, 'You must not have the intention of harming others, and you must have the intention of guarding against others. The deepest chasm will eventually sink, only the human heart is unpredictable.' In this complex society, you cannot be malicious, but you must also know how to understand. Be on guard, because people are unpredictable and there will be many unknown dangers happening. ...