That was a tree.
A tree that was unprecedentedly huge!
In the outflowing layer, Ye Qingxuan couldn't even see the entire tree, but only inferred how big the terrible monster was by the way its shadow covered the entire Sacred City.
The terrible giant tree sprouted from the abyss, extended out of the Aether World, and crossed the nine layers of the Aether Sea. It came to the Physical World in the form of pure music theory, and rooted deeply in the enchantment of the Sacred City.
Just like being planted in soil.
All the abyssal music theories that Ye Qingxuan had seen were just its tentacles. The alchemical matrix in the outflowing layer was filled with complicated and chaotic abyssal music theories which seemed to be disordered and scattered, but actually contained certain rhythms and rules.
Although it extended thousands of miles, the trace of it couldn't be caught.