What does "dog bites dog, one mouthful hair" mean?

"Dog bites dog, full of hair" is similar to "harming others and not benefiting oneself", which means that when a person hurts others, he will also be hurt by his own actions. In the end, it is also a lose-lose. As the saying goes, if you hurt the enemy by one thousand, you will lose the enemy by eight hundred.

Both sides lose (Li m: Li m: liǎng bài jù shāng ā ng): It means that although one side wins, both sides of the struggle are hurt, and no one gains much. Out: Wang Song Chen Ying's "Wen Ding A Liang Zipu": "The gentleman of the Eastern Han Dynasty will want to be the enemy of the villain. In the end, both sides will lose, and the country will die.