On 22 January the Chinese Ministry of Health says, labels with smiling faces, neutral faces and sad faces must be visible on the front of doors of restaurants, hotels, swimming pools, bathhouses, and barber shops to reflect their hygiene situation.
Now I always thought that in the case of bathhouses and barber shops a smiling face indicated “girl is in” – neutral meant “girl busy” – sad meant “girl out”.
Confusing those bureaucrats!