With laughter from his friends, the young man became even ruder and meant to make trouble by stopping him from leaving while keeping saying, "Be a man and prick me with your sword; be a coward and crawl your way under my crotch." This was an obvious humiliation.
Han Xin stared at him, saying to himself, "Killing him will be as easy as turning my hand over. But it can by no means prove my ability; rather, it can only bring disgrace to my innocence. Besides, if I kill him, his friends will never let me go. What’s more, if by any chance I was put into jail, my life could be spoilt. I shall in no case be as aggressive as him."
By thinking this, he bent down and crawled through under the hooligan's crotch. The story tells us that sometimes we have to take humiliation so as to realize our greater dream.