Yang Chan opened the door to the room and felt it was warmer inside than out, though the difference wasn't significant. His attention was immediately drawn to the Alchemy Furnace at the side—a waist-high, ancient bronze cauldron. Below it was a closed valve.
It looked somewhat similar to the Earth Fire Houses he had seen in the Pharmacist Alliance in White Jade City, though there were some differences in its appearance.
Yang Chan's gaze fell on the control valve. He gave it a slight turn, and a wave of heat immediately burst forth, causing the room's temperature to rise rapidly. This was the true heat of the Earth Fire—scorching hot. The closer he got, the more intense the heat became.
He continued to turn the valve. The Earth Fire's flames shrank and then slowly grew larger under his control. Through this process, Yang Chan came to understand how the control valve worked.
