For instance, there is a jade "bird's-head cup" from the late Warring States period (475-221 BC). Items of similar form have been seen in bronze, silver and lacquerware, but this is the first in jade.
例如一件戰國晚期「玉鳥首杯」，類似的形式曾見於銅、銀、漆器，在玉器則是首見。