In episode 28 of HxH 2011, Wing extends his aura into a piece of paper and easily cuts through the tin can. By the look of it, the strengthen paper seems to have some "touch" on it. It looks similar to Killua's ability to transmute his aura into electricity.
The image below shows the scene on (1) HxH 2011, (2) HxH 1999, (3) HxH original manga. Which surprisingly the electrical-charged effect can also be seen on the manga, but nothing on the 1999 anime.
Wing is a typical Enhancer, the closest Nen types he could potentially master besides his main Nen type are Emission and Transmutation. The effect can be easily differentiate as Transmutation type, Killua is the perfect example. But it is practically impossible to develop this technique without spending years of special training and exercise. Is it just an additional "effect" to show the power of Nen during the starting of the arc, or he really had developed this ability?