I added the building:level on the building way/31587258 before you reverted it.
Don't see any level indication on the toilets POI wikipage : amenity=toilets?uselang=en
I don't see lot's of buildin:levels= key with amenity=toilets .... !!
https://taginfo.openstreetmap.org/tags/amenity=toilets#combinations

cuisine:jp=* is used for the translation of the type of food (in japanese in this case).
Is it translated in chinese?
Ok let's have a special tag for the menu : https://taginfo.openstreetmap.org/keys/cuisine%3Achinese
ICYMI: osm.wiki/Cuisine

Bonjour, bon boulot ;)

Hi Totor, agree with you. The node is in small letter node/3048418378
or I'm missing something? ;)