Inside Godly Hand Valley.
"…Senior Brother Li, I have a set of health-preservation exercises here. They were also left behind by Old Mo. Since your martial arts have been improving so rapidly lately, your body might not be able to handle the strain. You should try practicing Qi cultivation to properly regulate your condition. These two bottles of pills are commonly used supplements for Qi cultivation; you can take one every half month."
Han Li had clearly gone through some internal struggle before ultimately deciding to test whether Li Feiyu possessed Spiritual Roots.
Chapter 16