Among the many basic rank talismans that Yang Song knew, there was a type of talisman that Yang Song found quite interesting, that was the "Beast Companion Talisman".
This Beast Companion Talisman could bind the soul of a beast and let it become a companion of a cultivator.
Take note that even though it was a 'companion', it was still more or less a pet of the cultivator.
This talisman was not completely a basic rank talisman, as the cultivator's strength grew, the binding force in the soul of the beast would also continue to advance.
When Xiao Laoxu swore to be Yang Song's loyal pet, Yang Song could indeed perceive his loyalty. However, with the Beast Companion Talisman to boot, there was no need to be afraid of betrayal in the face of benefit and oppression at all.
Of course, if the beast betrayed or had malicious thoughts against its master, the binding power that bound their soul would explode and kill them.