BEIJING, Dec. 20 (Xinhua) -- Braving the chilly winter morning, Guo Changyi, a bus driver for Beijing Public Transport, arrived at the company office before sunrise to inspect and clean the bus and adjust its interior temperature.
Precisely on the scheduled time at 6:55 a.m., Guo's bus arrived at a stop on Chaoyang Road in Beijing's Chaoyang District to pick up pupils heading to Hujialou Central Primary School,
