Edited by English Children’s Bookstore Compilation Center 
Time to Sleep! [EPUB ebook] 

This book focuses on why animals need sleep and their unusual sleeping habits, which vary in when, how and characteristics they sleep. The illustrations in this book are real and vivid, and the language is simple and interesting; The large picture on the opposite page has a high value and is carefully drawn by the illustrator. In addition to the paper books, there are also explanations with reading and no need for parents to accompany. The electronic teacher tells stories and popular science, and accompanies children to master the knowledge.