Introduction: The heaven and the earth are changing, and countless space doors appear out of thin air.All kinds of strange beasts gush out from the space gate, and human beings usher in a critical moment of life and death.In search of a ray of life, powerful military soldiers and scientific researchers risked their lives to enter the world behind the space gate. They were shocked to discover that by hunting the alien beasts here, there was a certain chance of obtaining the alien card.Those with stronger mental powers than ordinary people, able to ward off alien beast cards, or transformed into alien beasts’ pre-mortem combat body, or into weapons and armors, or…a new profession came into being, and was honored as......