Soon thirty days had passed and only 2 people had managed to last the whole time, Luo Yin and An Tongyi! An Tongyi reached into his pouch to bring out one more pill but found out that all the pills had been exhausted. 'Oh no! If I stop now, my refined core will start to slowly dissipate and elder already said those are all the pills he has!' Soon the pain started spreading once more throughout his body, 'Argh, if only I had 5 more pills, I could easily enter the second stage! Right now I have almost finished refining my middle layer, and only the outer layer of my body remains!' Refining the core saw no major improvements in strength, albeit a larger stamina and endurance, but his physical strength would still remain the same. Once the middle layer had been refined, an explosive increase in strength could be seen, one could easily defeat 10 non cultivators in a single breath, and once the outer layer had been refined, one would see a stronger defense and resistance, some who trained only their outer layer fully would find their skin could resist 20 strikes of a blade without receiving significant damage!