The blessing of law was a miraculous phenomenon which occurs after the establishment of a law base by the cultivator. Many tried to pry the mystery behind an unusual phenomenon like this, but none were able to discern the truth. Cultivation, in general, was a path which went against heaven.
Every cultivator used the energy obtained from the world to raise his cultivation level. The very energy which the world gives birth to is fed upon by people to raise their power and break-through the limits. It is the reason why the path of martial strength and cultivation is not easy. It is the reason why martial artist always finds their paths to be hindered by the world itself.