This book is written with easy-to-learn, easy-to-understand, and easy-to-read illustrations and is printed in full color. It is divided into different chapters according to the types of knots and is arranged in order from easy to difficult. The book introduces in detail the application occasions, knitting steps and ease of untying more than 80 kinds of knots. In a very short amount of time, readers can learn a lot of tying techniques.