"It must be something the Elder Prince keeps close to him, or perhaps something he touches frequently. That way, through respiration or skin contact, the toxin would accumulate over time, gradually causing his health to decline without arousing suspicion."
Prince Zhenguo searched around the Elder Prince, but found nothing suspicious. He bowed directly to Yun Li, "I hope you can help find the source of the toxin, for the sake of my filial piety."
Yun Li reached out to help the Prince up immediately. "Do not worry, Your Highness. Since I have entered the Prince Zhenguo residence, I will do my utmost to assist you."
Chapter 81