Within the formation, Heavenly River Sword Sovereign and Luo Xiao were attacking the black robed elder and the enormous skull.
The black robed elder and the enormous skull both possessed the strength of the Great Ascension Early Stage. Their divine abilities were formidable and they were not easy to deal with. That was not even the most troublesome part. A human figure was emerging within the blood-colored whirlpool, becoming clearer by the moment. If the Ghost Race's reinforcements arrived, things would become difficult. Who knew how many Great Ascension Stage cultivators the Ghost Race had?
They had already destroyed most of the blood-colored stone pillars, but the blood-colored whirlpool remained unaffected. The Sky Netherworld must have used a formation or treasure to maintain the passage. Destroying the blood-colored stone pillars had only temporarily hindered the Ghost Race, and dragging things out would put them at a disadvantage.
They had tried attacking the blood-colored whirlpool, but it was useless.
The black robed elder claimed to come from the Void Ghost Race. His body could become incorporeal, allowing him to ignore Heavenly River Sword Sovereign's attacks as well as sound-wave attacks. If not for that, Heavenly River Sword Sovereign would have eliminated the black robed elder long ago.
Thunder techniques could injure the black robed elder, but he either used a treasure to block them or employed a Secret Art to evade them. He was in no hurry to determine victory against Heavenly River Sword Sovereign and Luo Xiao. Instead, he planned to stall for time and wait for reinforcements to arrive.
If they could break the Lizard Race's Clan Protection Formation and let Chen Yueying and Yan Que help them, they could end the battle swiftly.
Neither Heavenly River Sword Sovereign nor Luo Xiao was a Formation Master. They could not