The fresh and transparent texture of watercolor paintings and the blending of water and color are as soft and beautiful as lyric poetry or light music. This book is a tutorial on watercolor painting techniques from entry level to mastery. I hope it can become a good partner for novices in learning watercolor painting. The book has nine chapters in total. The first chapter introduces the materials and tools of watercolor painting. Chapter 2 explains the basics of color theory. Chapter 3 explains the basic knowledge of sketching. Chapter 4 explains the basic methods of color mixing and brushstrokes. Chapters 5 to 7 explain the basic techniques, white space techniques and special techniques of watercolor painting. Chapter 8 explains the texture expression techniques of objects of different materials. Chapter 9 selects typical examples of classic painting themes such as still life, food, flowers, animals, landscapes, and architecture for detailed analysis, helping readers to integrate and deepen their understanding in practice. The content of this book is comprehensive and practical, the explanations are easy to understand, and the layout is clear and intuitive. It is suitable for both beginners and painting enthusiasts with a certain foundation. I hope this book will enable readers to feel the charm of watercolor painting and enjoy the joy of watercolor painting during the learning process.