Human Race, Devil Clan, Demon Race, Dragon Clan.
Even some smaller races, such as the Dwarf Clan, were also making their preparations.
Every creature has its own path; mice have their burrows.
Not everyone was thinking of seizing a great opportunity in this turmoil; for many, mere survival was the primary goal. Particularly for those with low Cultivation, many with families have already sought refuge in the nearest cities.
Generally speaking,
Battles tend to avoid cities because the evil value brought about by destroying a city often means that one would be struck dead by a Heavenly Tribulation.
The higher the evil value, the more damaging the Heavenly Tribulation; this isn't a joke.
Apart from needing to endure a Heavenly Tribulation when breaking through from the peak of Nascent Soul to Divinity Transformation, every small realm after attaining Divinity Transformation Cultivation also requires overcoming a Heavenly Tribulation.