Why can't unmarried girls go to the grave?

Unmarried girls are considered to be full of yin, and the yin of the grave will be disgusting and unlucky.

Men are considered to be full of yang, and children are thin and vulnerable, so all kinds of folklore are actually aimed at these theories.

Of course, the physical condition of women and children is not as good as that of mature men. Many feng shui superstitions are actually evolved according to the actual situation, which is not necessarily stupid. Just to popularize people with low education, we can only use mysterious sayings.