This city was one of the biggest cities he had seen in this world and this was still just the outer area of the Central Region. This showed the prosperity of the Central Region.
He used his yang eyes and as he had expected there was not a single ghost here. It was obvious given the clan which was in the corner of the city.
Having a clan meant there were definitely some cultivators above the Void Tribulation Realm present in the city when darkness enveloped the city.
It was true that becoming a ghost did not guarantee sentience but as time passes those ghosts which are higher in cultivation realm would develop it.
So after centuries any ghost who was above Void Tribulation must be sentient and would be cultivating.
Well this saved him the trouble of gathering yin qi from villages and cities, since if these ghosts passed by them they would definitely absorb all of the yin qi. All he had to do was take it from them.
