The mouth says, seeing is believing.

口说无凭，眼见为实。

Seeing is believing.

看见才相信。

As the saying goes: Seeing is believing.

俗话说：百闻不如一见。

Just as in his illustrations, seeing is believing.

就好像他的插画，眼见为实。

Seeing is believing. Have you made it certain?

眼见为实，这事你弄确定了吗？