"If a mad dog bites you, won't you get down and bite back?" What do you mean?

It means "not as knowledgeable as a mad dog".

Not everyone deserves to be your opponent. Don't argue with people who have no quality. Smile away from him and don't let him bite you. Even if you are bitten, you can't solve the problem like a mad dog. This must be understood, because many people are playing mad dogs!

Many people are like garbage people. They run around, full of negative rubbish: full of depression, anger, jealousy, calculation, hatred, full of arrogance and prejudice, greedy dissatisfaction, complaint, comparison, unfriendly, ignorant, trouble, revenge, full of disappointment. With the accumulation of garbage in their hearts, they finally need to find a place to take out the garbage; Sometimes, when we happen to meet, the garbage is thrown at us.

This is the law of garbage man. (The garbage man's law comes from Fan Bingbing's response to online media people, describing people who have a lot of negative garbage and need to find a place to take out the garbage).

So never mind! Just smile, wave, stay away from them and go your own way! Never spread their negative rubbish to our family, friends, colleagues or other passers-by. The bottom line here is that happy and successful people will never let "garbage people" occupy any day of their lives!

Life is too short to waste your mind and energy on these things! Someone in your life treats you like this, and you just laugh it off! At the best, who will be as knowledgeable as garbage!