Does "allowed" mean "prohibition" here? Doesn't it should be "be allowed to~"?
Native speaker’s answer
Rebecca
"No [x] allowed" means that [x] is prohibited. The speaker says that no money or people are allowed in the fountain, so they are prohibited from entering the fountain. The grammar in this video is fine. You can also use "no people or money are allowed in the fountain," but it sounds a little unnatural and awkward. To express this idea most naturally, using "no [x] allowed" is fine. Ex: No smoking at school allowed. Ex: No jaywalking allowed.