A husband helped his pregnant wife get a seat on a bus by pinning a note on her back without her knowing before she went out.

Nanguo Morning Post says the Nanning woman, known as Wang, was surprised to be offered a seat as soon as she got on a bus, and to see all the passengers smiling at her.

She was finally shown the note on her back which read: "Please look after the pregnant woman.''

From the handwriting, Wang knew that it was her husband's doing.