Butterfly Girl Conferring Children

My mother is an expert at raising butterflies and has a butterfly house. It is difficult for women in the village to conceive. As long as the men stay in the Butterfly House for one night, their wives will become pregnant within a few days. After the eldest sister died, the second sister became the mother's successor. That night, my mother put a pollination bag on my sister's mouth, turning her into a pregnant butterfly girl. The village chief's son became the first target of his sister's concubine. I was angry that my mother was partial, so I sneaked into the Butterfly House, only to see a horrifying scene.