Ask the Swordsman to Bring Out the Sword

A peerless swordsman was seriously injured in a war with heaven and was on the verge of death. The swordsman's natal immortal weapon, the Immortal Burial Sword, exhausted all its immortal power and finally turned into a mortal sword. Only then did he find a suitable place for the swordsman to rebuild. The swordsman turned into a baby and was picked up by an old man, and then the story officially began.