Yu Mu's residence was a low and flat hall situated in the main residential area at the backyard of the Yu Residence.
Wu Qi followed Yu Huai into the hall where Yu Mu lived, walking along a dark and deep tunnel into the inner area. The tunnel opened to many forks on both sides, with short, dark, and oppressive passages that led to various halls such as Yu Mu's living place, meditation chamber, alchemy workshop, and others.
At the end of the tunnel was an oddly shaped hall. The round hall was one hundred and twenty feet in diameter, and hundreds of feet in height, yet it did not have a ceiling, which made it look like a deep well from above. A precise map of the stars was carved on the walls, with millions of bean-sized stars. It was unknown as to what kind of restrictive spell was used, as the stars were actually moving slowly over the wall along the path of the stars in the sky.
