Luo Yuan tried to cut the molted Flood Dragon skin with his Zhanmadao but could not even pierce it. He noticed that the blade would just slip off the skin whenever force was applied. However, once he used he utilized the inherent power of his Zhanmadao, even the defense of the skin could not prevent the blade from penetrating it.
Huo Dong and the rest were dumbfounded by the skin’s ability to protect itself. They knew that in addition to Luo Yuan’s Agility and Earth Stomp ability, he also possessed another mysterious power that he used to combine materials of different objects. The skin possessed a unique kind of defense. They knew what type of blade the Zhanmadao was. It could cut through steel like it was tofu, yet it could not even slice or pierce the Flood Dragon's skin. This skin would make the best material for armor, and Luo Yuan could synthesize it without much difficulty.