Initially, when Tang San declined the offer to become a disciple made by Du Gu Bo, Du Gu Bo was quite angry. However, after a while, Du Gu Bo realized that Tang San wasn't being arrogant. In terms of poison expertise, although his experience wasn't as extensive as his own, his knowledge was comparable. As they exchanged ideas, both benefited substantially in their understanding of poisons. The wariness between them was also gradually dissipating invisibly.
Of course, Du Gu Bo's pearl was still inside Tang San's Dantian, and Tang San had never brought up this matter. The elder and the younger one were like friends, repeating a similar daily routine.
Ironically, relying on his knowledge of medicines, Du Gu Bo tried to prepare an antidote himself after taking the one Tang San had given him, but although the antidote he produced had the same ingredients as the one prepared by Tang San, it had no effect. Little did he know that crucial catalysts were present in Tang San's antidote.