They knew few Tier 7 Formation Masters, only Lin Yiyi and Xiao Wentian. Lin Yiyi was merely an Integrated Body Early Stage cultivator, while Xiao Wentian was an Integrated Body Late Stage cultivator.
When they had fought on the frontline, they had not thought Lin Yiyi was particularly powerful. Perhaps it was because her cultivation was too low.
The Wang Family had been established for many years, yet it currently had only three Sixth-Order Formation Masters: Bai Yuqi, Wang Yongan, and Wang Xiangrong.
If they were fortunate enough to advance to the Body Integration Realm, they wondered whether they could refine a formation with such tremendous power.
"Senior Brother Xiao, did you use this formation to kill a Seventh Order Flood Dragon?"
Wang Ruyan asked curiously.
"I did. The formation was damaged as well. Fortunately, it hadn't undergone Transformation, so it was somewhat easier to deal with. You don't need to be so surprised. I traveled to many places and collected a vast amount of gravity-attributed materials. It took me ten thousand years to refine this formation. Killing two Body Integration Cultivators is still within its capabilities."
Xiao Wentian's face was full of pride. Aside from the Primordial Heavy Water, the flagpoles had been refined from one-hundred-thousand-year-old Heavenly Crystal Wood. Just collecting the Heavenly Crystal Wood had taken an enormous amount of time and effort.
Heavenly Crystal Wood was one of the Ten Divine Trees. It grew one zhang every thousand years and was unbelievably heavy. The older it was, the heavier it became.
Otherwise, how could Xiao Wentian have killed two Body Integration Cultivators with this formation?
Of course, under normal circumstances, enemies would never give him enough time to set up a formation. It was also fortunate that Wang Changsheng and Wang Ruyan had used the Soul-Quelling Roar