In the end, according to the experience in Ou Yezi's memory pieces, the barbaric Cultivators from the desolate land at the edge of the civilization were generally radical and had their uncanny quirks. They were not restricted by the rules of the noble sects, either. Therefore, other people would not come to mess around with them easily.
Pretending to be such an antagonistic guy would save him a lot of effort.
Li Yao was a great expert in camouflage in the first place. He had also made thorough preparations for the exploration and brought all kinds of tools and drugs, which could even change his appearance and physique in the cellar level. It was not a challenge for him to impersonate a guy who had vanished more than fifty years ago.
But before he completely figured out the guy's background, Li Yao did not intend to completely pretend to be Master Spiritual Vulture himself.