The "Undead" are not truly immortal; the term refers to their longevity. Even without any cultivation, they can live for five or six hundred years, a lifespan comparable to that of a Nascent Soul cultivator.
Hearing that these people from the Xuanqiu Kingdom were searching for something called the Blackwater Black Serpent, Yin Zhonghua could not help but recall Lu Wuji’s earlier warning that some major upheaval was likely occurring in the Underworld. Could this be the manifestation of the Blackwater Black Serpent?
Unlike Yin Zhonghua, who was pondering the implications of the turmoil, Chen Xuan focused on the word "Blackwater." According to legend, Blackwater was formed from the purest Yin energy in the Underworld and circled the interior and exterior of the Mount Youdu range. Consuming this water year-round was the primary reason for the Undead’s longevity. However, for cultivators and mortals from the Shanhai Realm, drinking Blackwater would cause their internal organs to rupture and liquefy, resulting in a death as agonizing as the "Intestinal Poison Hell." The existence of Blackwater added a touch of terror to the legends of the Underworld in the Shanhai Realm.
Chapter 3221