Ai Shengxing's original meaning: the name of grass is Artemisia argyi. A perennial herb of Compositae whose leaves can be made into moxa sticks for moxibustion.
Original meaning: a kind of grass used for treatment or physiotherapy.
In particular, the herb used in the "moxibustion" of acupuncture is "mugwort".
Interpretation: The literal translation of "seeking for three years" in Mencius means "treating Cao for three years", which means using moxibustion as a fitness method. At the same time, the physical therapy process is long-term. So the word "ai" means "to die for a long time". Moxibustion is suitable for the health of the elderly, so "Ai" means "old" and "nurturing". Moxibustion is a way to keep fit, so male or female color is also called "Ai", because male or female color can also play the same role as wormwood.