The first rule for buying tea is try before you buy. Looking at the leaves or smelling them is not an accurate test of their quality.
「一定要喝了再買」，建成茶行負責人林資培指出，古人所謂「識茶」，指的是品茗而非用肉眼觀察，光聞乾茶葉也不准，「因為有的茶聞起來香，泡出來不香；有的聞時沒味道，泡起來卻很香。」