About “Chifeng sui”
The Chifeng sui, also known as the Marrow of the Red Phoenix, is a Chinese medical compendium written during the Ming dynasty by Zhou Lüjing. Zhou came from an upper-class family and was expected to enter politics, but after being diagnosed with tuberculosis, he turned to self-healing and later became a Daoist ascetic. The text, dated 1578, includes various "longevity methods" that Zhou gathered over time. It reflects his personal journey and interests in health and longevity. (Summary adapted from Wikipedia, CC BY-SA 4.0.)
Some summaries adapted from Wikipedia, CC BY-SA 4.0.