The formula for the Breath-Holding Pill was indirectly obtained by Zhou Chuan from Zhao Ping'an. The Breath-Holding Pill had once saved Zhou Chuan's life, helping him escape Jia Bin's pursuit. Thinking back now, Zhao Ping'an shared a karmic tie with him.
"I got this pill from a friend, and it might be useful against death qi! Take it!"
"Could your friend be... Zhou Chuan?" Zhao Ping'an made the natural connection.
Chapter 534