老老恆言
Qīng geriatric-care work by Cáo Tíngdòng 曹庭棟 (1773), the principal late-imperial successor to Chén Zhí’s Yǎnglǎo fèngqīn shū in the elder-care literature.
Qīng geriatric-care work by Cáo Tíngdòng 曹庭棟 (1773), the principal late-imperial successor to Chén Zhí’s Yǎnglǎo fèngqīn shū in the elder-care literature.