The Black Source Pearl was an exotic treasure of origin power. It was something that was snatched by Heavenly Consort Yun Xiang from external realms after painstaking effort to break the seal on Demon God Ancient Netherworld.
After Fang Yuan had refined and secretly employed some methods, he could slightly sense the seal on Demon God Ancient Netherworld.
At this moment, it started to vibrate. Undoubtedly, this meant that something unpleasant was happening.
"Demon God Ancient Netherworld… has escaped!"
He was slightly stunned, but not too astonished.
After all, he could not control everything.
Encountering two invasions by the Mental Demon Realm, the trap by the Heavenly Court, and the massive array created by the combined efforts of many Gods and Emperors, a mere Demon Master would not be able to do everything flawlessly.