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**
After entering the grim secret underground tunnel less than 2000 m, they had entered a bubble-shaped underground space...
Anyone who entered this underground space for the first time might be scared by what they saw. Everything inside here was so terrifying that commoners could not imagine it at all.
It was a bloody pool; precisely, a bloody, stinky sea, which covered over 10 square miles.
This bloody pool was surrounded by senior crystals above Class V and some huge gold bricks. Like the banks of the bloody pool, these crystals and gold bricks were carved with runes on their surfaces. As crystals gathered the energy from everywhere, those bizarre runes flickered looming red light. At first sight, those runes looked like bloody eyes, which were gazing at the bloody sea while an invisible energy covered the entire bloody sea like a huge net...