A very interesting photo. The top leader of Shanghai, Mr. Han Zheng, party secretary, was leading a team ridding various kinds of shared bikes in street, showing his support to the concept. Pay attention to the riding position of every rider. You can clearly judge their rankings. As a lower ranking officer, never overtake the higher, however never be far way either. It is by no means easy to be a gov officer, at least one should have very confident bike controlling skills.
Han is riding the yellow bike in front, obviously.
Here he is in a more formal setting: