U+5FDB "忛" CJK Unified Ideograph-# Unicode Character

U+5FDB "忛" CJK Unified Ideograph-# is a rarely used Chinese character composed of the heart radical (忄) on the left and a phonetic component on the right, typically meaning "to be content" or "to be satisfied" in classical or historical contexts. It belongs to the CJK (Chinese, Japanese, Korean) unified ideographs block, which encodes characters shared across these East Asian writing systems. While not commonly used in modern Mandarin, it may appear in ancient texts or specialized dictionaries, and its structural composition reflects the typical formation of ideophonetic compounds where the radical hints at meaning and the other component suggests pronunciation. The character carries no widely recognized secondary meanings or modern standard usage, making it a niche element in the vast set of Chinese character variants.