superstition

According to an old superstition, breaking a mirror brings seven years of bad luck.

(Chinese) 根据一个古老的迷信，打破镜子会带来七年的霉运。

Many tall buildings in this city don't have a thirteenth floor because of superstition.

(Chinese) 由于迷信，这个城市的许多高楼都没有第十三层。