To master both kinds of Space-Time Rules, one must possess two talents.
But there are far too few Future Rule Cultivators. Even among the Eternal Existences in the King Realm who cultivate Future Rules, how could it be possible to have been born with the terrifying talent to cultivate a second kind of Space-Time Rule?
Not to mention the King Realm, even among the Duke Level powerhouses of the entire Human Clan, none currently master Future Rules!
There were some in history, but they perished along with their civilizations.
"The path of Dual Space-Time Rules is not so easy to tread."
Yu Gong sneered, "Moreover, his talent in Future Rules is already astonishing. The more specialized a genius is, the less talent they have in other areas, like the Light King, who has cultivated for countless years to the same effect."
A genius's talent is often concentrated on just one point.
The more exceptional they are, the more that's the case.