Linghu was the key to accessing the Law Binding so any communication outside had to be done via his efforts. Lanbao was instrumental in teaching him over the last 5 centuries like a true mentor to a younger Immortal.
Linghu had made some progress in consolidating his Law foundation in his dantain and he had reached the peak of the low Sliver Tier from what Lanbao told Lind.
In all of that, they had studied how the Law Core and Law Arrays had been changed by the Immortal tribulation. Lanbao certified that most of the functions they knew of were unchanged but a few key things had shifted.
For instance, there was not a trace of any Fiend Qi left anywhere. Suzen had made the mistake of assuming no one was near him nor hiding in other special realms. Linghu and Lanbao knew the risks so that particular feature was tweaked and found a few caches no one had known about across the territory.
