もんぜんいちをなす【門前（に）市を成す】
have many visitors; be prosperousあの店は門前市をなす盛況だThat store is 「doing a flourishing business [prospe...
もんぜんのこぞうならわぬきょうをよむ【門前の小僧習わぬ経を読む】
learn something 「by watching [without being taught]
もんをたたく【門をたたく】
彼は老師の門をたたいたHe called on the old scholar to ask for his instruction.
かどづけをする【門付けをする】
sing [play] from door to door (for money)
もんぜんに【門前に】
before [in front of] a gate
