Flux experts were different. Their physical strength was pretty good, so they didn't need to congeal armor. That was why they wouldn't do it before reaching consummate layer.
It would be when they had stepped into the peak layer and could cultivate the great flux master layer at any time. Only at such a point would they create a flux expert crystal armor.
Flux binding pills, which were of great usage to flux experts of the Origin World, would be used for that.
As for using them for cultivation?
Not all flux experts came from a rich family nor were like Li Yunmu who used the assistance of the system and refining pagoda to obtain the secret of refining power grains.
Because of that, flux experts who hadn't reached the peak layers would rely on their physical defense. Apart from that, they would also cultivate superior defensive limit training methods to increase their defense.
