Episode 1 Question. So silly from the director

I've a question. This seemed very silly and thought of dropping this show. In episode 1 opening scene, Kum wa fights with the ha men su and is also involved in fighting back with Han. His face is clearly visible there and he also went to meet the king / whoever after winning. He again comes back to Han when the clan leaders are invited. Like what the hell? Can't they even figure out him, the crown prince?? ROFL!!