Shanghai's Most popular form of travel

These rental bicycles are all over Shanghai. Just walk up to one scan the QR code on the lock and ride it away for 1 RMB or about 20 cents for 30 minutes. Ride it wherever and just leave it, no need to take it to a specific parking place. You see these all over Shanghai and you see people riding them at all hours of the night. This only works because there are so many of these everywhere. Props to Chinese entrepreneurs for building this business.