The room next door.
Lu Yu shut the door firmly, quickly stripped off his clothes, then, with some impatience, flipped himself into the wooden tub.
The moment he entered the water, the warm medicinal liquid coiled around him like a living thing. At first, there was only a faint tingling numbness, but very soon, countless tiny streams of energy began drilling into his body through his pores, charging wildly through his meridians.
Lu Yu could not help letting out a muffled groan. He immediately circulated the Great Pagoda Art, and as the art ran, he was astonished to discover that some strange substance was seeping into his bones and merging with his marrow.
In just a short while, every bone in his body was shrouded in mottled color, giving off an eerie, multicolored sheen.
Suddenly, it was as if fierce flames had ignited deep within his bones. A burning pain that sank into his marrow instantly spread to every corner of his body—this was the legendary Marrow Cleansing and Meridian Washing!
Lu Yu swiftly formed seals with both hands, and wisps of white mist rose from above his head, mixed with a faint, turbid aura. At the same time, vast, pure energy surged into his meridians like a tide, rushing along the circulation route of the Great Pagoda Art and pouring endlessly into the Dou Crystal in his dantian.
Under the continuous infusion of this immense energy, the sea-urchin-shaped Dou Crystal that had originally been the size of a pigeon egg began to swell visibly. The aura around Lu Yu also climbed step by step!
Mid-stage Three-star Dou Ling!
Late-stage Three-star Dou Ling!
Peak Three-star Dou Ling!
Four-star Dou Ling!
Bang!
An unknown amount of time passed. Only when his cultivation had stabilized at late-stage Four-star Dou Ling did that