The corridor was deep and silent, Ling Xiao's footsteps echoing in the stillness. The battle scenes painted on the murals on either side were vivid, looking as if they might leap off the walls at any moment. He noticed that seven differently shaped keys appeared repeatedly in these murals, and whenever he approached a key pattern, the Heavenly Derivation Astrolabe in his bosom grew slightly warm.
"These murals... seem to be telling the origin of the Seven Keys." Ling Xiao stopped and carefully observed a painting depicting the creation of the universe. In the picture, seven keys floated in the chaos, emitting light of various colors.
The voice of the Burning Heaven Devil Sovereign resounded in his Consciousness Sea: "Kid, don't waste time. That woman in white said the hunters of the Chaos Sea have already set their sights on this place."
Chapter 644