Fahrräder der Chinesischen bike-sharing service Bluegogo sind in einem verlassenen Ziegelfabrik in Wangzuo Stadt angehäuft, Fengtai District, Beijing, China, 6. Juni
Bicycles of Chinese bike-sharing service Bluegogo are piled up in an abandoned brick factory in Wangzuo town, Fengtai district, Beijing, China, 6 June 2018. Over the past year, about 30 companies have madly pumped out millions of new bicycles from factories, distributing them in major centres in a battle for market share. The two biggest companies, Ofo and Mobike, claim to collectively have 20 million users registered with their services. The bicycle boom has revived cycling in a country that was once affectionately referred to as the bicycle kingdom, prior to three decades of high-speed economic growth that flooded the streets with cars. But now there is growing concern about a bubble, as big investors rush to pour money into bike sharing. The key appeal of the shared bikes ª that they do not need to be returned to a dock ª is proving problematic in busy spots, where bikes are piling up and blocking pedestrians.