When the power suppressing the Void weakened, another crimson sacrifice had to be offered. Otherwise, if the Void's resentment erupted, it would cause the village to be destroyed.
It also happened that a pair of twins would be born in the village during each cycle. It was generally acknowledged in this village thata the twins were originally one person. However, they were produced separately so that they could become the Crimson Sacrifice in the Crimson Sacrifice Ritual. Therefore, the villagers believed that during the Crimson Sacrifice Ritual, when one of the twins killed the other, the twins would become one and release a powerful force that could suppress the Void and protect the village.
It was the same game Little Yichen had played a long time ago. And for some reason, when he saw that the story was set up around a pair of twins, he was naturally inclined to buy it.
