C292 Zheng Shide, the One Who Gave Him the Medicine.

"Heh, no need for concern; your body isn't sick in the slightest. It's simply a matter of age. Go ahead and take this Medicine Pill of mine—it'll keep you safe for a decade," Feng Zhentian said with a smile.

"Reaching the age? Young man, you may not be old, but you certainly don't lack confidence. A mere youth in the Qi Gathering Stage