Board Thread:Naruto Discussions/@comment-28849742-20170102125315/@comment-734582-20170103090314

u Elveonora wrote: Exaçtly, because every non elemental technique was said to have a different ratio of physical and mental energies, hence there has to be more to it. I think it's simply a deeper control over chakra.

Each shinobi can mould chakra, but it seems few have control over the ratios. Yin release is control over the mental part (creating images, ideas, giving form), whereas Yang is control over the physical part (changing size, healing).

Similarly, Six Paths Yin and Yang is a deeper control over Six Paths chakra (which seems to take the Soul and Blood/lifeforce rather than chemical energy and thoughts).

So yin-yang can nullify ninjutsu because it attacks the basis of ninjutsu, namely the chakra itself.