Twenty-one He is in the Alchemy Room!

Beside the cauldron in the alchemy room of the Commerce Medicine Pavilion, there stood a stone platform specifically for placing medicinal herbs. Yun Xiao placed the wooden tray in his hand upon it, then directly stretched out his hand, resting it on one of the circular holes of the pitch-black medicine tripod.

This pitch-black cauldron, with its three legs and two ears, had holes the size of an adult's palm on either side. Yun Xiao knew that the circular hole he had touched was precisely the fire entrance hole.

Speaking of becoming a Meridian Refining Master, aside from requiring a Fire Attribute Ancestor Vein and formidable Power of Soul, one generally also needed a teacher who was likewise a Meridian Refining Master.

The path of Meridian Refining, perhaps even more complex than the cultivation of Meridian Qi, required hand-in-hand guidance from a teacher for controlling the properties of medicinal herbs and mastering the Pill Fire.