Yan Yu swiftly passed through the corridor when he suddenly noticed a flying insect darting above his head.
To anyone else, it might have been mistaken for a wild bug, but with Yan Yu's rich past life experience, he quickly recognized it as the "flying fireflies" cultivated by envoy cultivators.
Each flying firefly acts as a relay for Divine Sense, allowing the Envoy's Divine Sense to spread to areas it could not reach otherwise, thereby easily achieving extensive reconnaissance—a simplified version of the Envoy's skill "Eye Perception that Reaches the Heavens".
Yan Yu smiled faintly at the flying insect, while on the other side, Tang Xiaolian's face turned pale with shock:
"I've been discovered by Captain Yan!"
"How did he notice?" Zhang Huaide furrowed his brows and asked.
"He smiled at my bug." Tang Xiaolian said.