This is the sign hanging in the establishment that Shanshan and her parents often frequent.
I’m not sure what function the Braille on the sign, which is behind a desk, serves. One would assume that a blind person working at the establishment would know their location. And, a blind patron would probably not be able to easily find the sign.
And, while we’re on the subject of things that I’m unsure about, here’s a poster of Britney Spears on a fish tank in the same establishment: