This series takes the dinosaurs living 65 million years ago as the theme, each volume takes a representative dinosaur as the main character, endows it with a unique personification personality, and tells the wonderful stories around it. In addition to fascinating stories, this series has strong knowledge, science popularization, illustrated and interesting by reducing the behaviors of predation, competition, migration, cooperation and courtship among animals in the age of dinosaurs. Each story contains different philosophies. Through the dinosaur story, it reflects the feelings of human society and inspires small readers to think about the value of life. This volume takes parrot beak dragon and pterosaurus as the protagonists, and tells about the parrot beak dragon and pterosaurus ethnic groups that originally lived together and had intimate relations. They diverged for their own interests. The two ethnic groups met with many setbacks and frustrations. Finally, they worked together again to build trust in cooperation, overcome the strong enemies and live together in friendship ever since.