With the advancement of technology, most traditional Chinese medicinal pills have been replaced by tablets.
The price of tablets is relatively low and they are very easy to make.
Even though they have the same efficacy, pills do not have much competitive power against tablets.
Fortunately, some special ancient prescriptions still have inner mechanisms that science has yet to explain and cannot be replicated with modern technology to produce medicines with the same effects.
The Lifespan Extension Pill that Su Fan was about to refine is one such pill.
To refine the Lifespan Extension Pill, eleven precious medicinal ingredients and fifty-seven common medicinal ingredients are required.
Beyond that, there is another ingredient, nearly impossible for others to obtain, that is essential to perfect the pill.
This ingredient that brings the Lifespan Extension Pill to perfection is none other than Su Fan's treasured blood.
