咁有一日 ， 大概兩年半之前 我遇到 Hugh Herr 教授 佢問我係咪知道點樣解決呢個問題 我話 ： 冇 ， 仲未呀 但我好鍾意解決咗佢
So one day, about two and a half years ago, I met Professor Hugh Herr, and he asked me if I knew how to solve this problem, and I said, "No, not yet, but I enjoyed solving him."