Slaying Demons with Long Sword

The white jade capital in the sky has five cities on the twelfth floor. Immortals caress my head, knotting my hair and receiving immortality. What remains unchanged is the pursuit of immortality. The emperors of the Tang Dynasty were even more obsessed with alchemy and immortality. The protagonist accidentally gains the ability to live forever, but always gets into trouble. After battling wits and courage with different Taoist immortals and demons, immortality seems not so good.