HANGZHOU, Aug. 8 (Xinhua) -- In the scorching afternoon heat of Hangzhou, where temperatures exceeded 40 degrees Celsius, Mr. Wang stepped out of Wulinmen Subway Station. He skillfully used his mobile phone to scan a code, unlocking a shared bike with a silver seat, and rode it to his destination.
"The original black saddle of the shared bike absorbed too much heat after being exposed to the sun, sitting on it o
