Elevators without fourth floors: The scholar Su Hsueh-lin has written that in ancient China the numbers four and 72 were perhaps both mysterious numbers, and moreover that "four" was a symbol for the great earth.
沒有「四」樓電梯學者蘇雪林曾為文推測，「四」與「七十二」這兩個數字在中國古代可能都是神秘數字，而且「四」應即大地的象徵符號。