This picture taken on January 31, 2017 shows people riding bicycles of Ofo (L) and Mobike sharing companies on the street in Shanghai.
Unlock them with an app, drop them off anywhere, and nip past lanes of stationary car traffic: the humble bicycle is seeing a revival in China as a new generation of start-ups help tackle urban congestion and pollution with fleets of brightly coloured two wheelers. / AFP PHOTO / Johannes EISELE / TO GO WITH AFP STORY: Lifestyle-China-transport-technology-bicycle-environment, FEATURE by Dan Martin