The colorful crow series is suitable for middle and advanced level. According to the relevant public information, there are 20 original Chinese series of colorful crows, and the extracurricular books of colorful crows for primary school students are suitable for the extracurricular books of literary children in grades 3, 4 and 5, and 8 and 9, 10,1,12. The authors are (Germany) Mitchell Ander, Audrey Prussler, Ur Nasu Villefort, etc.