Chu Han followed behind them. After traversing a complicated mountain path, he saw the group enter a hidden cave.
But he did not follow them inside.
Two Black Crow Organization members were still standing guard at the cave entrance.
Both of them were early-stage 3rd Rank Martial Artists, yet they were only responsible for guarding the entrance. That alone was enough to show the strength of this organization.
Chu Han did not force his way into the cave. His current mission was only to investigate and search for Professor Chen's whereabouts.
If he forcibly killed the two men, their companions inside would discover it sooner or later.
That would make the Black Crow Organization members more vigilant, perhaps even prepare in advance.
By then, rescuing them would be difficult.
So he planned to sneak in and investigate first before deciding what to do next.
Using the mountain mist as cover, Chu Han circled around to the upper part of the mountain where the cave was located.
This mountain was riddled with caves of all sizes. The Black Crow Organization's cave was merely one of the most inconspicuous among them.
Some of the other caves could only fit one person through, while others were bottomless. Who knew whether one of them might connect internally to the Black Crow Organization's cave?
Moreover, the entrance to the Black Crow Organization's cave was very small, so there had to be other ventilation openings inside.
With that thought, he immediately spread out his Spiritual Power and carefully sensed the airflow within every cave.
If an entrance connected to another cave, air currents would definitely flow out.
And if humans or mutated beasts were inside a cave, the airflow would inevitably carry certain distinctive smells.
Sure enough, Chu Han quickly discovered a noticeable change in airflow