Chapter 490 Alien Robots

Phil Du turned around and kept paddling his hands on the wall beside him, using the friction to make his body move backward.

Zhan Xiao and the others also heard the order and retreated backward at the same time.

But before everyone had retreated ten meters away, a metal door was closing downwards in the depths of the corridor they had just passed. In most seconds, the metal door would close the entire aisle.

This door would separate them from the troops outside.

"Damn!"...