Mo Xun: The Path Reforged

Emperor Mo Xun, wielding the ultimate imperial weapon, the Canglan Sword, was ambushed and killed at the Burial Emperor Abyss. Upon awakening, he finds himself back in his sixteen-year-old days as an outer disciple of the Fuyao Sect, carrying memories of his past life and a fragment of his soul that inexplicably reincarnated with him. This time, he is determined to reclaim everything he lost. Watch as he ascends the Dao anew and protects those around him! — Description from novelcodex.org