他干活儿很快。
He works fast.
erhua variant of 干活
Every character draws itself, stroke by stroke. Then grab the brush: trace it yourself and hear the word when you finish.
Nice writing!
Chinese words snap together like bricks. Every word below shares a character with this one, so you are already halfway to knowing it.
他干活儿很快。
He works fast.
他每天都在外面干活儿。
He works outside every day.