Doomsday: My Monster Sequence Legion

The end of the ice river, monsters have arrived, and order has collapsed. The current rules are that there are no rules, and fists are the principles. Humanity is about to begin its extraordinary evolution. Good thing. Su Chen also had a problem, dying eagle + drone = level 0 monster: Fierce Eagle, acquired characteristic: reconnaissance! Mutated tiger + a pile of scrap metal = Level 1 monster: War Tiger, acquired characteristics: tyranny! Even the mythical mountain and sea giant tortoise, the sky-holding demon ape, Su Chen was able to create one after another... At the beginning, Su Chen decided to protect his city. Later. I don't eat beef!