One volunteer has found the long hours at Expo rewarding despite the difficulties and occasion rude visitor, Shang Ban reports.

As people enjoyed the opening ceremony of the Expo 2010 Shanghai late into the evening on April 30, Cheng Lehuan, 21, a public administration major at Fudan University, was fast asleep. She had a 5 am wake-up call the next day to volunteer at the Expo Garden.

"I was so glad to see so many groups of volunteers dressed in the green uniforms and so proud of myself to be one of them," Cheng said, recalling her first morning in the Expo Garden.