Moreover, each level has a total of ten keys, and only by collecting these ten keys can the entrance to the next level be unlocked.
These ten keys are held by some City Lords within the Demon Kingdom.
However, these Demon Cities number in the tens of thousands, if not hundreds of thousands.
Therefore, Huang Xiaolong must first ascertain which cities hold the ten keys before he can proceed to seize them.
Dark light surged over Huang Xiaolong's entire body, his appearance and form constantly shifting, soon transforming into a demonic figure, and then he flew towards a Demon City ahead.
A moment later, Huang Xiaolong arrived before that Demon City.
These Demon Cities were all constructed from the rare Hell Black Luminous Stone, emitting resplendent light and rich demonic qi.
Upon entering, pure and dense demonic qi pressed in on Huang Xiaolong from all sides.
