Taboos that have been passed down among Chinese folk for thousands of years - you can't look in the mirror in the middle of the night, you can't insert chopsticks into your rice, you can't whistle at night...
These are not superstitions, they are rules. Violating taboos will attract "female things".
They are a special group of people who have been passed down for thousands of years. They can see and deal with the "female objects" caused by violating taboos.
