By giving really reasonable fee (as low as FREE, if the renting period less than 1 hour), promoting more and more locals and foreigners strat to ride bicycle. This greatly reduce CO2 (Carbon Dioxide) emissions, and make them healthier by paddling the bicycle as physical excercise.
This will be the best practice for tourists who travel to Hang Zhou. It's very convenient and low cost.With bicycle, tourists can travel faster then on foot, mean time more detail than by taxi.

