The reason Chen Tang entered the smuggling tunnel was truly not to hunt down Gu Canghai and Chou Suilin...
It was long said that killing someone at the Tenth Stage wasn't this easy; otherwise, outside the tunnel, Chen Tang wouldn't have easily let the Three-Eyed Pianuo and the Purple-Golden Yaksha leave. He would have caught at least one and refused to let go.
He brought his companions into the tunnel for only two purposes.
One was to test the effect of the Shedding Blood Pill, to see if, after swallowing one, his companions would still be repelled and suppressed by the Plane Force of the tunnel.
In short, it was an experiment, and the nature was basically the same as the three old monsters — Purple-Golden Yaksha, Three-Eyed Pianuo, and Golden Robed Clan — constantly guarding the tunnel earlier and refusing to leave.
