actually, the answer is:
public toilets,
and you can go to supermarket without shoes
nitter.moomoo.me/3YearLetterman/status/1611869612412440579#m (https://nitter.moomoo.me/3YearLetterman/status/1611869612412440579#m)
https://nitter.moomoo.me/dominictarr/status/1612180241535094784#m