Low-level Martial Arts: This Martial Arts Master Knows Immortal Magic?!

[Leisurely] Li Qing transmigrated, his identity one of nobility—the son of a city lord! But at the start, not only did he lose all his original memories, but he also nearly woken up naked, almost lying dead in the streets! A system? An old man? A cheat code? He searched high and low, examining his entire body, but only found a jade pendant engraved with the character "Qing." Until a torrential downpour—a mysterious notification sounded in his mind: [Water Control Technique: 1%] The rain became his sharpest blade, his strongest shield. He initially thought this was an ordinary ancient world, but gradually discovered: There is a martial arts world, sects, and martial arts—a truly low-level martial arts world. And with his [Water Control Technique], he had already stood at the pinnacle of martial arts, revered as a grandmaster! A green robe fluttered in the wind, a gourd hung at his waist. And… a slightly delicate two-foot-long sword? (Although the style was a bit effeminate.) He traveled thousands of miles south to find his relatives, wandered through the conflicts of the martial arts world, and incidentally raised an empress. Who is he? The passersby were all astonished, bowing their heads and whispering – "The Green-Clad Sword Immortal, Li Qing!"