In this tranquil and serene environment, Chen Cheng's mind became exceptionally clear. He gradually entered a state of deep focus, forgetting both himself and the world around him. As he cultivated, notifications from his panel appeared from time to time.
[Iron Armor Skill derivation progress increased.]
...
Having cultivated the Iron Armor Skill to the Perfect Level, his skin had reached the stage of Profound Gold Hide. Now, cultivating the Iron Armor Skill provided a minuscule enhancement to his skin, but it still offered a slight improvement to the strength of his Qi Blood.
Moreover, as the derivation of the Cultivation Technique progressed, the circulation of his Qi Blood was slowly shifting. Instead of only tempering his skin, it was now also gradually tempering his Major Tendons.
