The Sub-Rules were all being cultivated perfectly well, but every last one got stuck at the step of condensing a Sub-Rule into a Primary Rule.
Everyone knew that breaking through to the Seventh-Order Sky Opening Realm with a Primary Rule would grant greater combat strength and a brighter future, but they simply could not do it.
In the end, they all settled for the next best thing, cultivating four Sub-Rules similar to Earth, Water, Fire, Wind, and breaking through to the Sky Opening Realm by conventional means.
Once inside the Sky Opening Realm, they would then seek to cultivate a Primary Rule.
For quite a long time, the descendants of the Devouring Origin Clan inside Devouring Origin Space had desperately cultivated the Space Sub-Rule, all for the sake of escaping Devouring Origin Space.
But in the end, everyone who managed to escape had done so by a stroke of luck when Devouring Origin Space fluctuated. It had nothing whatsoever to do with the Space Sub-Rule.
You Bing did not have the cultivation method for the Space Sub-Rule. You Bing, or rather, the Ancient Arc Tribe, mainly cultivated the Ancient Origin Art.
It was a balanced and moderate cultivation technique, one that could be cultivated to the Dao Fusion Realm Peak and even held hope of breaking through to the Sky Opening Realm.
In terms of power, it was not much different from the Wu Meng Clan's Nine Heavens Star Kill, but its requirements for aptitude were somewhat lower.
From this point alone, the Ancient Origin Art was an extremely excellent Dao Fusion Realm cultivation technique. In the future, Chen Fei could take it out and let the human race's Dao Fusion Realm cultivators practice it.
For now, Chen Fei needed to fuse it first, then at a suitable time, take