A Chinese student wraps her arm around her waist and touches her belly-button to attempt a Belly-button challenge at a school in Luoyang city, centr Stock Photo - Alamy

One girl tries her hand at the belly button challenge

Belly button hi-res stock photography and images - Page 2 - Alamy

With a belly hi-res stock photography and images - Alamy

Don't cyberbully her': celebrity Chinese street food seller with

Don't cyberbully her': celebrity Chinese street food seller with nice

Belly Button Challenge”: The new buzz exciting the Chinese web

Reach it if you can! --Belly button challenge goes viral on

Midriff belly button Stock Photos, Royalty Free Midriff belly

I didn't know your tummy hurt': many moved by touching Chinese

Arms around waist hi-res stock photography and images - Alamy

Pin on arms raised belly button showing

Don't cyberbully her': celebrity Chinese street food seller with