She clearly heard Cao Zhen say that besides the Four Holy Rejuvenation Pills, there are two other pills that can heal the injury of their martial uncle.
Cao Zhen, being the Sect Hierarch of the Hundred Peaks Sect and a reincarnated Great Ability, would not deliberately claim he can perform alchemy and not do it just to upset us, as that would be of no benefit to us or the Hundred Peaks Sect.
So most likely, what Cao Zhen can help to refine is the third type of pill.
Cao Zhen gave Yao Feng an approving glance and nodded slightly, saying, "The Transcend Tribulation Immortal Pill can indeed address your martial uncle's injury, but it requires an abundance of medicinal ingredients. To be blunt, using such a pill to save your martial uncle would be somewhat wasteful."
In truth, it mainly comes down to the ingredients; the materials needed to refine the Transcend Tribulation Immortal Pill are so many that the Hundred Peaks Sect definitely cannot amass enough for such a pill.
