Fu Changsheng sent a spell striking the firewall formed by the Red Lotus Earth Core Fire.
Immediately, a hum echoed, and a subtle crack slowly appeared on the firewall. In an instant, the poisonous gas contained inside surged out like a raging tide.
However.
Fu Changsheng reacted swiftly, the spell instantly changed, and the crack in the firewall that had just opened promptly closed again. Yet, a few wisps of poisonous gas seeped through the crack, drifting slowly toward the direction where Fu Changsheng and Niu Qiuxiu stood.
Wherever the poisonous gas passed, the stone walls emitted a "sizzling" sound, as if being corroded by strong acid, and began to melt instantly.
Witnessing this scene, Fu Changsheng's pupils shrank suddenly.
The power of this poisonous gas was far more terrifying than he previously imagined.
"Qiuxiu, are you ready?" Fu Changsheng slightly turned his head, looking at Niu Qiuxiu beside him.
