Kaiyang Star, Hall of Longevity.
Shen Pingkang, the Immortal Immortal, made his third unexpected discovery that the law of nirvana of emperor soldiers is feasible in theory, but it seems totally impractical in fact. At least no one, such as the God Emperor, the Immortal Immortal Immortal, and the Prison Emperor, is willing to try to verify this law of nirvana!
Indeed, every method of nirvana transformation has a great risk, which can be described as a near death. However, like the method of nirvana of imperial soldiers, the first thing to do is to refine oneself into imperial soldiers, who are ignorant and can't wake up. It may even become a weapon, which can be refined and used by others without freedom