A worker rides a shared bicycle past a huge pile of unused shared bikes in a vacant lot in Xiamen, Fujian province, China, on December 13, 2017. In 2017 and 2018, supply vastly outstripped demand and eager companies ran into trouble with local governments as dockless bike-share ventures placed millions of bikes on the streets of China's cities, only to have many bikes impounded, or to go bankrupt and abandon their inventories. The end result: countless piles of surplus or discarded bike-share bicycles dotting the landscape in urban China.