居庸關 [ㄐㄩ ㄩㄥ ㄍㄨㄢ; ju1 yong1 guan1] Juyongguan, frontier fortress on Great Wall north of Beijing, in Changping district 昌平區[ㄔㄤ ㄆㄧㄥˊ ㄑㄩ; chang1 ping2 qu1] ◄ ►