The strong smell of oily smoke pierced Lumian's nose, almost making him faint with a keen sense of smell.

Relying on the "dervish monk"'s ability to endure all kinds of extreme environments, Lumian crawled forward along the air passage, sometimes upwards. In just a dozen seconds, he poked his head out from above a washroom on the second floor.

After confirming that there was no one here, Lumian jumped down lightly, walked quickly to the door, and looked secretly at both sides of the corridor.