Netherworld Realm.
The Netherworld Classic was divided by Lu Bei, Taisu, and the Abandoning Scripture, leaving only a tombstone shell with its code emptied, creating a severe bug. The map named Netherworld Realm was no longer operational.
The balance between the Yin and Yang surfaces of Netherworld was lost, with the Yang surface of Netherworld falling, slowly dragging countless lives down towards the Yin surface of Netherworld. Once they overlapped, they could never be separated again.
Yun Zuoyu was truly out of luck.
He was first defeated by Sha, losing his eligibility to control the Genesis White Lotus and falling from the ranks of the invincible characters. In name, he was still among the invincible, but in essence, he had lost his threat. His future achievements would be limited, and he was utterly out of the running for the position of Great Heavenly Monarch.