After the Catastrophe, every rule in the world was rewritten. In the Age of Black Iron, steel, iron, steam engines and fighting force became the crux in which human beings depended on to survive. A commoner boy by the name Zhang Tie was selected by the gods of fortune and was gifted a small tree which could constantly produce various marvelous fruits. At the same time, Zhang Tie was thrown into the flames of war, a three-hundred-year war between humans and demons on the vacant continent. Using crystals to tap into the potentials of the human body, one must cultivate to become stronger. The thrilling legends of mysterious clans, secrets of Oriental fantasies, numerous treasures and legacies in the underground world — All in the Castle of Black Iron! Written by Drunk Tiger, this novel is a prime example of fantasy steampunk. Let us journey through the world of limitless possibilities and inventions together! ------ **Warning: This novel contains mature content**
Zhang Tie skimmed it over and found the cultivation process of this secret knowledge started from lighting surging points on one's heart, livers, spleen, kidneys and lungs. Based on the interactions between the five human organs and five elements, namely gold, wood, water, fire and soil, it could constantly trigger one's potential and advance it to the utmost.
Zhang Tie felt this cultivation method was fair and progressive. It was fantastic. Starting from LV 12, the cultivator would have one more strand of the strength of the five elements respectively after each level he promoted. This strand of strength was unusual, with the rising level of the cultivator, in the later phase, when the cultivator collected all the five elements in his battle qi, his battle qi would grow more powerful.
"What's its level? Where did you get it from?" Zhang Tie asked Major General Ford.