The Mask of Vengeance (1980)

The Mask of Vengeance 1980 / 風流殘劍血無痕 1980 / The Great Conspiracy , The Magic Sword , Feng Liu Can Jian Xue Wu Hen , Fung Lau Chaan Gim Hyut Mou Han , 风流残剑血无痕

A knife expert arrives to tell the ruler he is to be invaded during his annual knife skills challenge. He coaxes his old enemy (a deaf, blind old man) out of hiding. In return he grants the hero the prize of the knife skills. (Source: IMDb)