This entry explains idiom “Bai ju guo xi” originating from Zhuangzi Knowledge Rambling in the North. Using the white‑horse‑through‑a‑crack metaphor, it depicts life’s fleeting nature and reminds us to cherish brief, irreversible time.
This entry explains idiom “Cang hai sang tian” from Ge Hong’s Biographies of Immortals. Drawing on Maggu’s tale, it depicts immense long‑term transformations, stressing impermanence of circumstances and worldly fortunes.