In this chapter, we learn that lin is a soul-taker, and that he's working for the "King of Hell in the Underworld" . He's been taking the pills for 3,000 years because they're the only ones that prolong people's lives. The only exception to this rule is bai quairan, who is a top-level spiritual root and can take the pills as many times as he wants. But as a qi-refinement stage cultivator, he can't take as many as he'd like because the pills won't last as long after being taken many times. . The two men met for the very first time 3,000 years ago, when lin was just a young ghost and bai was trapped in an immortal's body. But lin couldn't get bai to take the longevity pills because he was trapped by the immortal. So, bai thought he was going to get the breakthrough he was looking for, but instead, lin got stuck in the body of the immortal and died. The underworld sent an army of soul-takers and judges to try to help lin, but the mission didn't succeed. After that, the underworld gave up on capturing bai lin's soul, and lin decided to establish his own foundation.