Fantasy: the Great Sword of LV999

I got the big sword LV999 through time travel, but I don't dare to use it indiscriminately. But don't mess with me, or else... From then on, wealth piled up like mountains, and beautiful women embraced him. What should I do if I can't bear to throw it away? Cultivate immortality, cultivate immortality, cultivate immortality! Immortal! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.