The difference between the two was like jumping from a small circle into a larger one, although there might not be any significant changes in strength during the process. However, once a cultivator became a Demigod, he indeed laid the foundation for his later upgrades. It can be said that even if there was no change in strength, cultivators of the old power system could not skip the Demigod stage, because without the ability to become a Demigod, no matter how powerful the strength they controlled, it would be absolutely impossible to further upgrade to a Deity.
Demigod, Demigod—perhaps the reason for such a name was primarily because becoming a Demigod was akin to stepping into the hall of a Deity. Only by becoming a Demigod does one truly embark on the path to becoming a Deity.
At the time, Zhou Tian indeed noticed no change in his power after becoming a Demigod, but the sensory changes were quite significant.