Chinese idioms describing a dark room include: 室如悬罄 ? The dark room is not deceived, and the room has four walls.

Chinese idiom: 室如悬罄

拼音： shì rú xuán qìng

Explanation: The room is empty. It is a metaphor for being penniless. It is the same as "the room is as empty as the county".

Origin: Zuo Zhuan (左传-僖公二十六年)：""Qi Hou said, 'The room is as empty as the county exhaustion, and there is no grass in the field, so why do you have no fear?'"

Chinese idiom: 安室利处

拼音： ān shì lì chù

Explanation: A safe and convenient place.

Origin: 战国-宋-庄周《庄子-徐无鬼》："Between the breasts and the femurs and the feet, they think they are in a safe place, not knowing that the butcher's once drums his arms and cloths the grass and manipulates the smoke and fire."

Example sentence: She would love to have a safe place to stay.

Chinese idiom: 暗室逢灯

拼音： àn shì féng dēng

Interpretation: A metaphor for being in a state of distress or confusion, and then suddenly being rescued or guided by someone.

Source: Qing Dynasty - Xia Jingqu (夏敬渠)《野叟曝言》第十回："天幸遇著相公，如暗室逢灯，绝渡逢舟，从此读书作文，俱可望有门徑矣..."

Example sentence: Your guidance has given me the feeling of meeting a lamp in a dark room.

Chinese idiom: 暗室不欺

拼音： àn shì bù qī

Explanation: In a place where no one can see you, you don't do anything unseemly.

Origin: Tang Dynasty - Luo Binwang, "Firefly Fugue": "The class of a gentleman has a way of entering a dark room without being deceived."

Example sentence: Zhixian was born in a dark room and did not deceive; since he read the books of Confucius and Mencius, how would he dare to do the deeds of a thief and a metatarsal?

Chinese idiom: 室徒四壁

拼音： shì tú sì bì

Explanation: 犹言室内空无一物。 It is a metaphor for poverty.

Source: Wei Shu - Yang Gu Zhuan (魏书-阳固传)："[Gu][Gu], who was a clean official, had no money left in his house, and on the day of his death, he had no money left in his house, so there was nothing left to pay for the funeral, and his relatives had to collect for his coffin."