Sword Against the Immortal Sky

[Traditional Xianxia, no system, swordsmanship, the protagonist is not stupid] Su Chen, a young boy, whose parents disappeared when he was young. In order to find out the mystery of his life experience, the stubborn young man holds a rusty sword and rises from his humble beginnings. Let's see how the young man relies on his pride, one man and one sword to sweep away all the great geniuses, fight in all the worlds, and compose a touching epic of immortality!