These immortal pills were specially crafted by Li Zhirui because people like Jiang Fengwu and Xiaoqing, who suffer from bodily depletion, are quite common and there's a significant market for such remedies.
Even if they can't be sold, they can be used within the family.
Though other pills for healing injuries could also work, they don't target the root of the problem and are less effective, so he put in some effort to slightly modify the pill recipe.
Similarly, low-level pill recipes can be adjusted using this approach and then given to the family alchemist for production.
For such beneficial spiritual objects, Jiang Fengwu naturally didn't refuse and directly accepted the pills.
In addition, there were also pills for rapid Mana recovery and short-term combat power bursts, meant for her to cope with the Thunder Tribulation.
