After Tang Zhen had killed two of his men and his life was in danger, the dark-skinned man had no choice but to hand over the seven-colored Sea Dragon.
However, it was obvious that he was unwilling to give up. He was probably still thinking about how to get the seven-colored Sea Dragon back.
If he wasn't trapped in the cave, he might have even gathered his helpers and found an opportunity to kill Tang Zhen.
Anyone who saw hundreds of millions of gold coins would be unable to suppress the greed in their hearts and imagine the scene after they had it. Not to mention that he was not a good person.
Tang Zhen could not be bothered with the explanation of the dark-skinned man. He casually kept the seven-colored Sea Dragon and turned around without saying a word.
No one noticed that when he turned around, he looked at the dark and thin man as if he was looking at a dead man.