Proving the Way of Death

There is a legend in the world that when the Heavenly Palace gathers the Yang and the Hades gathers the Yin, a baby will be abandoned here. The person who gets this baby will have the opportunity to understand the world's best swordsmanship "One Sword". This technique is coveted even by the Heavenly Palace and the Hades... Humans, gods, and demons all only pursue "life". When have you ever heard of "death" from the mouths of those cultivators?