Why did Han Xin drill his crotch?

There is a saying that Han Xin had two hobbies when he was young, one was fishing and the other was sword dancing. A local butcher wanted his sword, but he didn't give it to him. The butcher told him to get under his crotch.

The second theory is that the drifting mother who often helps Han Xin is ill. In order to get some meat for the wandering mother, Han Xin went to the butcher to buy meat on credit, and the butcher asked him to take it to his crotch.