Ice. Jade. Crystal.
Ryu felt that probably the smartest thing to do would be to help bolster his Bone Structure. It was among the hardest talents he had to unshackle and absorbing Heavenly Favor had proven to be an excellent shortcut. If he focused on things like this, he should be able to unleash more of full potential.
The four facets of his Ice Jade Crystal Body were Healing, Friend of Nature and Beasts, Absolute Balance and Symmetry, and finally, Ungodly Cultivation Speed.
Building an alloy that followed these four facets would be difficult, but not impossible. Ryu already had several ideas based on his knowledge from Sacrum, but he was sure that if he read up on more information exclusive to the True Martial World, it would be long before he could think of several more ideas.
Maybe the only real issue lied in two factors.