C4325 Secret Martial Arts

Sixth floor of the Yin-Yang Palace. It wasn't like Tang Yu had never opened it before. At least, when he reached the Ninth Heaven Divine Sovereign, he would be able to increase the power of his techniques by a lot.

However, the true function of the sixth level had yet to be revealed. At least, not now.

Furthermore, Tang Yu had already guessed what the sixth floor of Yin-Yang Palace contained