Xu Tiancheng's situation was still somewhat different from the Mutated Frost Centipede Martial Soul's situation.
Back then, the Mutated Frost Centipede Martial Soul had lacked software. It had only needed a suitable system floppy disk to start running.
Xu Tiancheng, on the other hand, needed to fuse with a True Spirit. It was basically like writing a program from scratch.
The difficulty of the problems was different.
But the method of solving them was the same: use something suitable, then stuff it in.
Right now, what Xu Tiancheng's body lacked to break through to the fourth level of the "Nine Deaths Divine Skill" was just a bit of True Spirit.
And if there was one thing Huo Yuhao had plenty of, it was souls!
Without hesitation, Huo Yuhao directly summoned a Small Banner and began extracting the souls within it. Then he crushed the souls, searching for that tiny bit of True Spirit.
The Small Banner was not the Hao Emperor Banner, but an ordinary banner-type magic treasure used to store souls. Inside were all the souls he had collected during this period. Most of them were the souls of those genius contestants from various factions who had been buried alive underground.
He did not choose to use the ghosts inside the Hao Emperor Banner because once those ghosts entered the Hao Emperor Banner, their True Spirits belonged to the Hao Emperor Banner. Even if they were crushed, their True Spirits could not be found.
The Blood Qi Souls inside the Blood Slaughter Orb were in a similar situation.
The souls of geniuses were precious, of course, but compared with helping Xu Tiancheng break through to the fourth level of the "Nine Deaths Divine Skill," they were not worth mentioning.
Time was tight. The fusion had to be completed before