Description: This is a popular science picture book that combines fun and documentary. Readers can follow the protagonists Ondina, Xiaohua, Antoine and Ava to form an expedition team and start a journey around the world! In recent years, ecological issues have become one of the most important issues in the world; ecological education and environmental education are also part of children's quality education. Through small actions in daily life, children can have a more sense of participation in protecting the earth, and let science popularization and theory come into play.
