People scan the QR code on the shared wheelchair with smart phones to use it at the Gansu Provincial Maternity and Child-care Hospital in Lanzhou, capital of northwest China's Gansu Province, on Nov. 13, 2018. Recently, a batch of shared wheelchairs were put into use at the hospital. Users can access the service after scanning the QR code and paying a deposit. The service is free for the first two hours. (Xinhua/Chen Bin)