These days, with everybody working in the daytime, surveyors frequently end up ringing doorbells of empty apartments. But if they go at night, skeptical residents will wonder, "Who ever heard of a civil servant working at night?"
再加上現在上班族多，白天去往往大唱「空城計」；如果晚上去，又被住戶懷疑哪有公務員晚上上班？