Lin Wu had been in the form of an armor the entire time, hidden underneath Shirong's robes and thus no one had seen him. But now that Shirong was attacking, he instinctively attacked using the Immortal Crystal Armament.
But instead of turning into a weapon completely, Lin Wu did something else. He dementedness over Shirong's right hand and formed a gauntlet. The gantlet was covered in thin plates of crystal that slid over each other and at the knuckles, barbs were present.
It was these barbs that were glowing with the green light when Shirong punched.
'Immortal Crystal Armament: Gauntlet Form!'
Lin Wu released concentrated radiation from the barbs along with Shirong's Immortal Sky Shaker art's wind attribute spirit Qi.
~DENG~
A loud sound was heard as Shirong's fist met the barrier's first layer.
~crack~crack~crack~crack~