His works of art may vary widely, but just as Cai's calmest expression can never obscure a wise smile, even his most serious works hold a thread of humor, and often an innocent, childlike playfulness. "I look like an artist on the outside, but I have a playful spirit on the inside."
儘管作品百花撩亂，但就像蔡國強冷靜的神情後面總掩不住一抹慧黠的笑，即使最嚴肅的作品中，都潛藏著一絲幽默，甚至是孩童般的天真玩性，「我的外表看似是藝術家，內心卻是遊戲精神。」