他的去向不得而知。
His whereabouts are unknown.
unknown; unable to find out
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.
他的去向不得而知。
His whereabouts are unknown.
结果如何不得而知。
The result is unknown.