Lin Wu then went on to tell them about the shadow calamity and how he had sensed its presence in the world as well. He also told them that Wang Xiong knew about it as well and that the two of them were working towards making sure that something like that would not happen.
Of course when Lin Wu had told this to Wang Xiong back then, it had pretty much just been a lie. But now that he had fought the skull god, Lin Wu knew that it wasn't really false either.
Lin Wu knew that the Skull god was here for the Taiji Celestial's inheritance as well and had gotten the 'Hei' aspect of Taiji celestial. The Skull god and the shadow calamity were rather similar and the Skull god himself had done this by taking on the aspects of the Shadow calamity when he had found a weakened seed of it.
Lin Wu guessed that if there was one such Skull god, there were probably others that had gotten the inheritance of either the shadow calamity or the Taiji celestials inheritance as well.
