1.
the four great caves, namely: Longmen Grottoes lóngménshíkū龍門石窟lóngménshíkū龙门石窟 at Luoyang, Henan, Yungang Caves yúngāngshíkū雲岡石窟yúngāngshíkū云冈石窟 at Datong, Shanxi, Mogao Caves mògāokū莫高窟 at Dunhuang, Gansu, and Mt Maiji Caves màijīshānshíkū麥積山石窟màijīshānshíkū麦积山石窟 at Tianshui, Gansu