Lotus flowers grow in the purified water at the Chengdu Case Pavilion, a miniature version of Chengdu's Living Water Park, with a system that naturally cleans water using water rehabilitation systems. [Photo/Xinhua]

Fishes swim in the purified water at the Chengdu Case Pavilion, a miniature version of Chengdu's Living Water Park, with a system that naturally cleans water using water rehabilitation systems. [Photo/Xinhua]