C518
"Black Cloud City, River Styx Spring?" When Nie Li heard this, his heart moved. He had promised to help Nangong Yue find the Supreme Yin Water, and Hei Zhongtian and Hei Si both cultivated the Supreme Yin Qi. Perhaps it was related to the River Styx Spring; perhaps, they could find the item Nangong Yue and Li Wan Yue were looking for in Black Cloud City.
However