寢宮 [寝宫]

Jyutping cam2 gung1
Pinyin qǐn gōng

Definitions (Wiktionary)

noun
palace which serves as the residence of the emperor, the empress or imperial concubines
noun
mausoleum of the emperor
(syn.) 陵寢, 陵墓, 陵寝

Definitions (Kaifangcidian)