The first stage of Qi and Blood Body Refinement is passed down in various sects, martial arts schools, gangs, and the military.
Because body refinement, as long as one eats well and has sufficient nutrition, can lead to some achievement through haphazard practice.
It's a typical example of being easy to learn but difficult to master.
Many people can achieve success in the early stages.
The second stage becomes extremely difficult.
Cultivation resources alone become precious.
Various aged medicines are needed to replenish Qi and blood and heal injuries. Years of honing Qi and blood and martial arts skills are also required… Every step is incredibly difficult.
Moreover, some people will hide the most profound techniques, treating them as family heirlooms.
They won't easily pass them
