The eighth demon-sealing monument was not located in the deepest part of Immortal City. As they got closer, Chu Mu was surprised to discover that it was near the ancient castle where the final glory of the Tenth Realm had once taken place.
Back then, Chu Mu had only been on the long slope beneath the castle and hadn't noticed that there was an inverted reflection spring similar to the other seven demon-sealing monuments behind the castle!
From a distance, Chu Mu saw that the Inverted Reflection Spring behind the ancient castle was emitting strands of evil light. The resentment, powerful enough to rival the combined strength of all the sealed creatures in Immortal City, condensed into a huge cloud of evil that floated above the castle!
This resentment was always concealed, and if one hadn't approached this place, one would never know that such an enormous amount of resentment was gathering in this ancient city area!!