他自行解决。
He solved it by himself.
自行
voluntary; autonomous; by oneself
adverb HSK 3.0 · Band 7
Watch it being written
Every character draws itself, stroke by stroke. Then grab the brush: trace it yourself and hear the word when you finish.
自
行
Nice writing!
Build with these blocks
Chinese words snap together like bricks. Every word below shares a character with this one, so you are already halfway to knowing it.
自
See it in sentences
自行回家。
Go home by oneself.