Szu-ma Chung-yuan explains the "red center," the "white board" and the four directions of wind that are mahjongg tiles: "When one's mind is above board and open to the white light, and you're smack dab at the center of a red hot streak, then you'll make a fortune whichever direction the wind blows."
司馬中原解釋麻將裡紅中、白板和東南西北四風的設計，「以光明磊落的心（白），在鴻運當頭（紅）時，走東南西北四方去發財。」一人得彩，雞犬升天