On the ceiling, a red infrared lamp tube had gone dark; Qi Nian had smashed it in half with something unknown.
"As long as we break an infrared lamp tube, a pit will appear on the corresponding ground, and we can escape from here! Qi Nian must have already escaped safely." Song Que said, picking up a book to throw it up.
"Bang—"
A crisp sound echoed on the ceiling; a lamp tube was hit, but it did not break.
"How can this be?"
Song Que stared blankly at the lamp tube that was still glowing and heating.
"There is a layer of transparent thick shell protecting the lamp tube; it can't be broken at all! How exactly did Qi Nian break it?"
Song Que's mood grew increasingly impatient.
At the same time, he realized there might be a pitfall in the method of breaking the lamps.
If these lamp tubes were so easily broken, then the scorching heat wouldn't be a test at all, nor pose any real threat.
Qi Nian… must have used some special method to break it.
"Four bulbs..."
