Illustration of the book mentioned in the source. Original caption: "interior of the yang hsin tien. (palace of "mind nurture. ") the emperor t'ung-chih used this palace as his residence during the whole of his reign. "
additional caption by uploader:
"yang hsin tien" refers to yangxin dian (養心殿). "t'ung-chih" refers to tongzhi (同治). Date: 1910.