you mean the other half of the kyuubi chakra . yin yang was made up by fanboy. its not in the data book or manga
yin yang chakra=doent exist
yin yang, is chakra pal as i said before on your little thread you made, and even later posted a manga page. All chakra is made of 2 types of energys. Physical energy also know as yang energy, and spiritual energy known as yin energy.When any ratio of the 2 energies are combined then the energy resulting is chakra. Since chakra is made of 2 energies, it is impossible to make chakra from 1 energy, as it would just be that type of energy.
When kurama had his yin chakra sealed, a tiny miniscule amount had to remain, for kurama to be able to use chakra. However as all but a tiny bit of his yin was sealed away his chakra is overfloweing with yang energy, because of a lack of yin to stabilize it into normal chakra.
simply if you cannot see that yin yang does exist, then go craw back to your hole where you can ignore the facts. It was not made up by some fanboy, but rather you a fanboy are trying to avoid the fact that you are wrong.