Although Qin Shaofeng had comprehended the art of tempering Void Stone, he couldn't do it himself.
But with ten Mechanical Puppets at the tenth level of the Realm King Realm, hunting a few Devil Race World Kings was child's play.
What's more, the World Kings gradually gathering in this area were all in small squads, which made the ten Mechanical Puppets' hunts go very smoothly.
It made perfect sense!
These Devil Race World King squads had at most fifteen or sixteen members. Most of their strongest members were only at the eighth or ninth level of the Realm King Realm, and only a handful had reached the tenth.
Still, to avoid exposing the Mechanical Puppets and alerting the Devil Race that something was amiss, Qin Shaofeng only sent them after squads led by World Kings at the seventh or eighth level of the Realm King Realm.
At his current seventh-level Realm King Realm cultivation, with more than four thousand five hundred saturated, perfected domains, absorbing Inner Worlds from World Kings below the sixth level no longer did him much good.
It wasn't that they had no effect at all. But at least a hundred rare Inner Worlds from sixth-level Devil Race World Kings would be needed to bring one of his domains to the saturated, perfected state, after which it could fuse with another domain.
Even Inner Worlds from sixth-level Devil Race World Kings required at least ten of them to bring one of Qin Shaofeng's domains to the saturated, perfected state.
And even the Inner World of a seventh-level Devil Race World King could only bring three to five of his domains to that state.
The Inner Worlds of eighth-, ninth-, and even tenth-level Devil Race World Kings could improve him by much more.
But since he had to