The Primal Qi gathered by the Octagon Formation was not inferior to a Nascent Divinity Tribulation realm expert's Primal Qi.
In other words, although Zhu Honggong was in the Divine Court realm, within this Octagon Formation, he was comparable to a Nascent Divinity Tribulation realm expert.
Even Yu Zhenghai, Zhu Honggong's eldest senior brother, was slightly taken aback by this.
"Seven Tribulations Phenomenon!" Zhu Honggong shouted. He mobilized all his Primal Qi to move the Octagon Formation. His lightning-like energy surged up into the sky toward the scattered cultivators.
Phenomenon was the seventh Tribulation in the Nine Tribulations Thunderblast. It was also Zhu Honggong's most powerful skill.
