Ask for a mainland costume drama, the hero just started pretending to be blind, but he is actually a demon or something with silver hair.

The legend of the sword, also known as the sword of heaven, is about Xiao Ting, the king of abercromby. First he was blind, then he recovered, and then he was blind. He pretends to be a knight-errant and has two faces. Super cool, and a real man with feelings and righteousness. The story is about his doomed love with the heroine in order to grab the five-day sword.