He didn't transform the body of the Nascent Soul Ancestor into his own combat force, but merely possessing a Nascent Soul Ancestor's body for research could make his cultivation goals much clearer.
The Nascent Soul Stage is the ultimate goal for all cultivators, at least on the Beishu Continent.
Li Shiming acknowledged that he couldn't resist such a lure; he also had his reliance, it wasn't just pure greed.
He changed his direction and took a big detour to reach the original location of Patriarch Weng Zhao.
Thinking of Patriarch Weng Zhao's action of severely wounding two Arhats to set a trap, Li Shiming changed into a cloak with a hood, covering his entire body including his head.
This cloak was a Spiritual Artifact, with the ability to block Divine Thought probes.