Holding the Sword to Seek Immortality

A mortal who has been frail and sickly since childhood. My sister was kidnapped by a demon cultivator, and I don't know whether she is alive or dead. After the death of his family, he unexpectedly stepped into the world of immortality, only to find that he was pregnant with the Xuan Yin Jue Vein. His lifespan is no more than fifty, so he embarks on a journey to change his life against the odds. PS: Features of this book: multiple skill combinations, multiple magic weapons, secret techniques, supernatural powers, alchemy, weapon refining, etc. Please support newcomers' works. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.