Long ago, China had no freshwater rivers or lakes. The people had to depend on rainwater for drinking and for watering their crops. But one hot summer, no rain fell. Four kind dragons wanted to help the people. Can they figure out a way to bring water to the people? Our World is a six-level primary series in British English that uses fun and fascinating National Geographic content, with stunning images and video, to give young learners the essential English language, skills, and knowledge they need to understand their world.