sìdàshíkū

Four great caves, namely: Longmen grottoes [[龍門石窟|龙门石窟<Lóngménshíkū>]] at Luoyang, Henan, Yungang caves [[雲岡石窟|云冈石窟<Yúngāngshíkū>]] at Datong, Shanxi, Mogao caves [[莫高窟<Mògāokū>]] at Dunhuang, Gansu, and Mt Maiji caves [[麥積山石窟|麦积山石窟<Màijīshānshíkū>]] at Tianshui, Gansu