"It's an honor to be part of such an important event," he added. "We just want to leave the guests and reporters with a good impression of Qingdao and the Chinese people.

"More important, I also find joy in meeting people from different countries, which has broadened my views," he said.

Wen Qing, a teacher from Ocean University of China and a volunteer organizer, said it's not an easy job to maintain a good posture and greet people with a smile all day long, as well as offer useful and professional assistance.

"The students told me that they enjoy the work because they genuinely want to offer the best service," she said. "I'm proud of them."