Nine days later, Castle of Black Iron, Divine Mountain, Heavenly Waterfall...
A silver-dragon-like waterfall plunged from halfway up the main peak of Divine Mountain, forming the most magnificent sight within Castle of Black Iron.
Zhang Tie had named this waterfall, which seemed to flow down from the heavens, Heavenly Waterfall.
The waterfall's waters came from melted snow atop Divine Mountain. The melted snow became a waterfall and rushed downward, then flowed into rivers and lakes. The water in those lakes and rivers naturally evaporated into the air, while the moisture in the air drifted naturally, condensing atop Divine Mountain into snow, ice, and wisps of mist. Then the ice and snow melted once more, becoming a waterfall that surged down...
At this point, Castle of Black Iron had already formed a microscopic natural and climatic ecosystem within a certain range, beginning to circulate on its own.
Around Heavenly Waterfall, verdant mountains and forests layered upon one another, creating strange and beautiful scenery. The air was fresh, making it Zhang Tie's favorite place to cultivate.
Over these nine days, Zhang Tie had come alone to Heavenly Waterfall every day to meditate and recover.
At this moment, Zhang Tie sat cross-legged atop a huge bluestone not far from Heavenly Waterfall, his eyes closed as he quietly recuperated.
Zhang Tie neither spoke nor moved, while the Immeasurable Roc King Battle Qi within him, restored to its original state, surged and cleansed his body back and forth like Heavenly Waterfall itself. Like an emperor commanding thousands upon thousands of troops, it swept away the final hidden dangers and bandits within him. Those last remnants were gradually forced from the cells of his body to the index finger of his right hand, turning that finger jet-black and gleaming.
After nearly ten hours of meditation, Zhang