Fylm The One-armed Swordsman 1967 Mtrjm Kaml - May Syma 1 [2021] [Validated ✦]

This appears to be a mix of:

However, as Fang Gang (played by Wang Yu) grows up, he excels in martial arts, sparking jealousy among his adoptive family. A confrontation ensues, resulting in a tragic accident where Fang Gang’s right arm—the sword arm—is severed. Left for dead and physically broken, he retreats into the wilderness.