Urban management departments in some cities have impounded many cycles after complaints about blocked sidewalks and random, unregulated parking, as Zhou Wenting reports from Shanghai.

As he walked out of a subway station in Shanghai recently, Lin Haowen was delighted to see hundreds of shared bicycles neatly arranged on the sidewalks.

"The hundreds of shared bikes are finally back after disappearing for more than a month. I believe that many commuters like me, who have grown accustomed to riding them, will rejoice," said the 30-year-old computer programmer, who lives 2 kilometers from Xinzhuang Subway Station, the last stop on the western arm of the Shanghai subway system's Line 1.