By sportswriters Yao Youming and Geng Huihuang

CHENGDU, Aug. 5 (Xinhua) -- Discussing his work, lifeguard chief Wu Chunhai of Dong'an Lake Sports Park Aquatics Center compares himself and his colleagues to unsung heroes.

"Most of the athletes have a higher level than us, of course, so we have no chance of rescuing anybody in the pool these days," Wu said.