The ventilation duct was extremely cramped; Ling Chen crawled on the ground, unable to extend his arms fully and could only inch forward by alternating his elbows. He had already determined the general direction to the warehouse and, after traveling about forty meters along the ventilation duct, a wire mesh appeared in his line of sight.
Gazing through the wire mesh, he saw a sealed room filled with numerous boxes on the outside.
Seeing that there was no one in the room, Ling Chen dug his fingers into the wire mesh, preparing to push it aside. But at that moment, he caught a glimpse of a red light out of the corner of his eye and was suddenly startled, hastily halting his hand.
After confirmation, he felt a surge of relief; it was fortunate he had noticed it in time, otherwise, he would have surely alerted the base's security.