The Grandmaster of the Machine Beast

What should I do if I can't defeat you because your cultivation level is high? Escape? You are so behind! Have you ever heard of the human wave tactic? If I can't defeat you, I will kill you with my army of machine beasts! It is said that the machine beast was a powerful fighting force in ancient times. It's just that now, many of the core technologies for making machine beasts have been lost. In today's world, machine beasts can still be seen everywhere, but due to some limitations such as speed, flexibility, attack power, etc., They cannot be used for fighting and can only be used as labor and transportation tools. The protagonist lives in this kind of terminal world of machine beasts. However, the machine beasts with almost no fighting power can have strong combat power after his transformation. He even created an army of machine beasts...