In recollecting his rise to prominence in Japan, Cai says, "I had no way of opening the door. It just so happened that when I arrived at the door, it opened and I skated in."
回顧在日本發跡的過程，蔡國強說，「我沒有能力開門，是我剛好走到門口，門開了，我就溜了進去。」