I've seen this before. 21 year old freshman from China. Became the #3 ranked foil fencer in the country immediately. But once you're done beating up on people that aren't your own size things change.
Who was this?
The legend goes as thus....
Back in the mid to late 90s when Penn State was in the midst of a 4 or 5peat championship run (both mens and womens) the coach asked Gang Lu at an international meet if he'd like to ditch the Chinese national team and fence at PSU. He was like "Sure" turned to his teammates, picked up his stuff and said "tell coach I'm not coming back" for which he was promptly blacklisted in China.
He appears to be #2 on the all time foil winning percentage list at PSU with an 89.6% winning mark
Fun guy. Confident. I don't know what became of him.