This was a move that Lin Wu had made a few days ago but had never tried it. He made it by combining all of the aspects of the abilities that he had. It needed a proper balance between them or it would just end up failing instead.
The immortal Sky Shaker art was used to produce the wind attribute spirit Qi which was then modified with the Sapphire meridians to gain penetrating properties. Then, Qi amplification increased the amount of it that could be produced at once.
Then finally came radiation manipulation, which not only added radiation to the mix but also helped compress it further. The orb itself was made of a wind attribute spirit Qi which was then further compressed with the air around them which Lin Wu irradiated and controlled.