In India, why do girls in some places have to be isolated when they come to menstruation?

There are more than 20 families living in a small village in Maha Lastra. There is a special custom here, which sounds incredible. Here, during menstruation, women can't live in the village. They must be isolated in a special room outside the village.

Because the local people think that it is unclean for women to menstruate, and this is not the only small village in India that has this custom. It is said that this is a local religious rule. They think that women who have their period will be cursed and can't stay in the village during this time, otherwise it will bring bad luck to the village. There are at least hundreds of such rooms, large and small, to hold these physical women. These houses are simple. There are no furniture or stools in it. The ground is covered with weeds. When you are sleepy, you sleep on it. They have to rely on food delivered by others and can't touch any tableware. Besides married women, even adolescent girls must abide by this custom.

Many girls in India have to drop out of school because of this, resulting in a low education rate in India. The Indian government tried to get rid of this feudal thought, but failed again and again, and finally failed.