```
Although the robot still maintained a standing position, its chest had been completely pierced through; it seemed as if it had been destroyed in an instant by some sort of sturdy and sharp weapon.
He Ao examined a few more robots and found almost the same situation—each had their chest pierced in the blink of an eye, instantly killed.
It must have been the same enemy.
The wounds weren't old; they seemed to have been made at the same time as the pits and potholes melted by lasers on the ground.
He Ao began to reconstruct the battle scene in his mind.
The invaders had burst through the door slit that had been smashed open, and the robots quickly reacted by firing lasers. But they were a step behind; the invaders dodged the initial attack and with incredible speed destroyed them in a short time.
