"Perhaps the old man considered asking for my help, which is why he taught me this language. But he couldn't wait for the day I entered the Aerial Mastery Stage and went for revenge alone."
Thinking of this, Ning Fan felt a bit uneasy in his heart.
Without the cultivation level of the Aerial Mastery Stage, it's impossible to discover the barrier of the Ancient Sky City.
And to enter the Ancient Sky City, one needs to reach the Aerial Mastery Stage.
All barriers need to rely on the power of heaven and earth, otherwise, they cannot sustain operation for a long time.
The movement of heaven and earth is ever-changing, and it's impossible to be immutable.
Since it relies on the power of heaven and earth, a flaw must exist somewhere.
Even if someone, by coincidence, discovers the vortex phenomenon,
