Years ago I had lunch with Chen Zhenglei and part of the discussion was about a man (also from mainland China) in the area we were in that was claiming lineage to his family that he did not have. Chen Zhenglei visited him and told him to stop. Someone asked him why he did not teach him a lesson for making this claim (aka beat him up). Chen said this is America, that gets you to court, in China, it would be different. I know of a situation in China in Yiquan/Dachengquan that got to a "Stop making the claim, publicly apologize, or I will kick your butt" Guy took out an add said he was lying and apologized.
I am pretty sure, in America, you go challenging someone, and start a fight, it will require to be standing in front of a judge soon thereafter.
Yang Jwing Ming told a story about a challenge he got from some guy that came into his school (then in Boston) and challenged him. He told the guy no problem, but please take a seat, we will settle this after my class. The guy sat down to wait. Dr Yang paid little attention to him and went on to teach class, they were working on applications and some qinna. He said he looked a couple times and saw the guy still sitting there, and then he kind of forgot about him. Class ended, he turned to talk with the guy...and the guy was gone..... Dr Yang said he saw the guy on the street several times after that and the guy wold just smile and wave and keep right n walking