The Nine Swords of Three Generations Finally Come to One

In the past, there was a swordsman named Li Dao who fell into a demon and died, leaving behind nine handles of his sword, waiting to be found in the next life: wood, iron, copper, black iron, hematite, mithril, fine gold, black gold, which have reached the blazing sun. But it is said that there is a black sword besides these nine swords.