Destruction Demon God Locke was naturally no stranger to the Immortal Slaying Sword Formation, whose mighty reputation shook all heavens and dimensional planes throughout the Immortal Domain Civilization.
Not only was he familiar with it—even Mechanical God Emperor Saine, far away on the Gear Time-Space Battlefield, was naturally extremely familiar with this renowned supreme killing formation of the Immortal Domain Civilization.
Saine's sworn younger brother, Duan Po, was the reincarnation of Master Tongtian of the Immortal Domain Civilization. The Immortal Slaying Sword Formation was Master Tongtian's innate ultimate art, as well as the killing move he had been proudest of throughout his life.
When Mechanical God Emperor Saine had traveled and cultivated in the Material Star Realm back then, he had personally studied and observed Duan Po deploying the Immortal Slaying Sword Formation from close range.
At that time, the Immortal Slaying Sword Formation deployed by Duan Po was vastly different from the first-generation Immortal Slaying Sword Formation released by his former incarnation—Master Tongtian—in the Material Star Realm hundreds of thousands of years ago.
It was a brand-new Formation Diagram that Duan Po had continuously refined and optimized after enduring countless trials of life and death, integrating his own insights with the rules of the present age. Compared with the first-generation Formation Diagram, it was not only more exquisite in its operational logic, but had also undergone a qualitative leap in killing power.
Clearly, the second-generation Immortal Slaying Sword Formation deployed by Duan Po in the Material Star Realm back then was far more powerful than the first-generation Immortal Slaying Sword Formation. It could even be said to have doubled in strength, its killing might surpassing that of the past.
Yet the Immortal Slaying Sword Formation now produced by Dao Ancestor Hongjun through the rule imperial swords under his control