Yuanwu Mecha

The invaders don't know where they come from or what their purpose is. Humanity started to resist through technological civilization, and the martial arts civilization fell into a stalemate. Now martial arts has integrated technology and started to fight back, and finally gained a foothold. But is this really the case? The death rate soaring every year in the Department of Space Defense does not seem to be the case. Where should the fate of mankind go...