外行wàihángTop 30000Meanings1. layman2. amateurCharacters used外outside行to walkExamples2他们tāmen是shì外行wàiháng。They are laymen.外行wàiháng谈tán策略cèlüè，内行nèiháng谈tán后勤hòuqín。Amateurs talk strategy, professionals talk logistics.