This picture book raises awareness of environmental issues through the beautiful story of a friendly Golden Fish living in ‘RunRun River’. One day, golden buildings suddenly appear and take over the peaceful RunRun river, in and near which the Golden Fish and the golden-sand villager live. Golden Fish doesn’t know what that building is, and where all the golden-sand villagers have gone. All he can do is just leave RunRun River like the golden-sand villagers did, because there is no golden sand left for him to eat. These two types of ‘gold’(the fish and the building) help children understand the need to protect the environment and the seriousness of environmental disruption. Illustrated with big and colorful drawings, the story is vivid, and the language both simple and kind.