I've pretty much read a lot about this technique, in the training session with Lili and Reborn, since she basically asked a lot around the limitations of the technique, and what she could do with it. From what I understand, the technique can be used to alter the already existing properties of an element (or CE and AE, if you specialize in Yin) in order to basically change it, and utilize the newly changed property for a specific use. For example, I'll go with Fire, Fire has many already existing forms, so this technique can be used to change say a fireball, into a more solid form, an ash form, a plasma-like form, alter its color, etc. Keeping it hidden isn't really much of an issue, since Kisei has a nice potion for that, but in general, this technique is rather better applicable to changing of states, I guess? But what are the limits to it, really. How hard can an element that is normally considered soft, become? Or for example, can one change an element to be completely contradictory to what it stands for? I know the example of Fire being cold is usually used, but what about Earth becoming more elastic? Allowing certain Earthen structures to bend at my will, like it was rubber? Or utilizing Water for scalding or freezing (though again, this is change of state, really), or even Lightning become liquid like, almost like in Storm? Does this mean I could for example, make my Chloroform CE into its gas based form from its liquid form? Or merely, alter its consistency? (It's already liquid, but has both gas and solid forms, normally, much like Water release).
Other than the many questions, I do like that the altered technique becomes neutral. Though, I have to ask, in what sense this works? If my technique is inherently weaker initially, does the Yin enhancement just automatically make it neutral, or does this only work for same rank techniques (not sure I am wording this correctly lol).