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Different brands of foreign cheese products are displayed during a news conference in Beijing in March. [Photo/China Daily]

Differing from the high flying public bicycle-sharing companies such as Ofo and Mobike, which install smart locks in their bicycles and have no requirements for parking areas, Youon focuses on public bicycles with fixed locking poles and designated parking lots.

Diabetics in the nine urban areas will also gain access to free screening for retinal damage and detailed diagnoses if problems are found.

Despite the stress and anxieties, De Castro is grateful for the appreciation being shown to the frontliners.

DiDi has rapidly positioned itself in urban markets as "a real and convenient option for thousands of people who need to get around efficiently," he added.