Sword Lord of Mountains and Seas

On the Shanhai Continent, the path to immortality is broken: humans refine blood and qi, while demons devour the living. Chu Xinren transmigrates into a worthless outer disciple of the Heavenly Sword Sect. He comprehends the transformation of blood and qi into spirit, and uses demonic qi to build his foundation—slaying fox demons and hunting strange beasts, guarding his Dao heart with his sword. Facing the sect's suspicion, the jealousy of prodigies, and the enmity of demons, he ultimately slays ten thousand demons, breaks the seal, and reopens the path to immortality. — Description from novelcodex.orgFull novel: Sword Lord of Mountains and Seas — read the rest free on N​o⁠v​e⁠l​C⁠o​d⁠e​x⁠.​o⁠r​g⁠