Tang Yin did not actively seek out any Rank 5 Demonic Beasts. He knew he would definitely encounter them in the future, he was heading into the depths of the south zone which was near the border. There was a high chance of encountering a Rank 5 Demonic Beast there.
There were not many obstacles in Tang Yin's way during his journey towards the depths of the south zone except for a few Demonic Beast. He did not even need to lift a finger, Xiao Fei easily handled them.
He made sure to keep their corpses so he could have an abundant supply of vitality when he used the Life and Death Seal.
When Tang Yin was already in the depths of the south zone and was heading deeper, he encountered his first cultivator.
It was an 8th-stage Qi Transformation Realm cultivator. Tang Yin did not avoid the cultivator. He carried on as normal.