When he was young and full of energy, Tsai would often ride his motorcycle into the mountains in search of butterflies. Often, he would catch a glimpse of a butterfly as it flashed by him. He would identify it and then store that information into his memory.
早期他年輕力壯，經常騎著摩托車在山區尋蝶，往往一隻蝶急閃而過，用好眼力辨識特徵後，隨即在腦海資料庫中辨識蝶種。