Chapter 604: Spatial Improvement, Divine Willow Wood, Supreme Azure Emperor Art!

A dense and flourishing yellow started spreading rapidly with Ling Yun's energy center at the core. In the blink of an eye, it enveloped Ling Yun and started filling the air all around him!

However, even though the yellow that was emitted by the Earth Emperor's Book was incomparably flourishing, it merely filled up the entire room. Not a single bit of this yellow managed to leak out the doors.

"W-What is happening?" Cui Lao, who was in the courtyard, was completely stunned by what he saw. He had no idea what happened because all he saw was that his own room seemed to be burning with countless bits of sulfur. The yellow smoke was almost like a substance as it couldn't dissolve at all. With Cui Lao's current abilities, he couldn't even see where Ling Yun was!