Metal in flash marriage, meet for a short time will soon complete mating. However, after the wedding, the female beetle will launch a fierce attack on the male beetle. They will get under the male's sheath wings, cut open his stomach mercilessly, and then devour his internal organs. In this process, the male scarabs have no resistance, they silently accept this fate, and even when their lives are coming to an end, they will persist in completing their tasks. This marriage custom is biologically called sexual feeding, that is, females will eat males after mating. This seemingly cruel behavior is actually an adaptation made by Jin to ensure the reproduction of future generations. Because the male scarab has completed the reproductive task after mating, the female can get extra nutrition by eating the male to prepare for the next spawning and rearing offspring. Therefore, although this behavior may be difficult for human beings to understand, in nature, it is a reasonable choice made by scarabs for survival and reproduction.