恰然自得
qiàrán zìdé · HSK 7
Just like
恰 exactly + 然 so + 自 self + 得 get = exactly so, just like that
Built from 恰 (exactly/just right) + 然 (in that manner) + 自得 (self-satisfied). The 恰然 front half pins the meaning to a precise just-so fit, hence the gloss just like.
自 — pictograph of a nose
自 originally depicted a human nose, shown frontally with the bridge and nostrils. Ancient Chinese pointed to their own nose to mean 'me,' so 自 shifted to mean 'self' or 'oneself.' A new character 鼻 was later created to carry the original 'nose' meaning.
得 — 彳 (step) + 旦 (sun/day) + 寸 (hand)
Originally depicted a hand 寸 reaching for a cowrie shell 貝 (later simplified to 旦), with 彳 'step' added to show going out and obtaining something. The core meaning is 'to get' or 'obtain'. The reading děi extends this to 'must/have to' — what one is obliged to get done.