Comment by sewer_bird

Can corroborate, also in Shanghai: I had much preferred Ofo to the Mobikes because they were a 'normal bike' without a belt chain. But then... time passed and rain poured, rusting up the chains and riders bending the wheels in innovative ways. Sometimes I'll luck out on a fresh Ofo bike, and then it's fine, but for every one of those there are 8 bikes I have to ditch because the chain won't go back on or the wheel isn't even planar.