The Bat King was killed by a Red Crystal Dagger.
Of course, the material composing this Red Crystal Dagger wasn't just ordinary red crystal, but precious Crimson Ore.
This indicates that the dagger is quite a noble weapon.
Lin Yifan speculated that this was a High Celestial weapon; otherwise, it wouldn't possess such powerful strength to instantly kill the Bat King of the Superior Immortal Fourth Realm.
After killing the Bat King, the disguised woman immediately used the Red Crystal Dagger to take the spiritual orb off the Bat King's head.
The moment Lin Yifan saw the true form of this soil-yellow spiritual orb, he was shocked. It was precisely the Female Earth Bead he had been searching for, unexpectedly encountered here.
The Female Earth Bead is one of the Northern Seven Lodges. By obtaining the Female Earth Bead, he could set up a pseudo five-element formation.
