surname Yi; abbr. for 易經|易经[Yi4 jing1], the Book of Changes
Upside-down version of 益, depicting food or drink being poured from a container (皿). Based on the original meaning "to bestow, give", now written as 賜. The meaning later shifted to "exchange", "change", and "easy".
《說文》:“易,蜥易,蝘蜓,守宮也。象形。《秘書》說,日月為易,象陰陽也。一曰从勿。”
to bestow, give