Zhang Yu is good at linear algebra. According to relevant public information, Zhang Yu is a well-known expert in mathematics education in China and a well-known tutor in mathematics examination. His textbooks Advanced Mathematics (6th Edition) and Linear Algebra were well received by students and teachers. Among them, Linear Algebra is a good textbook of linear algebra, which covers the basic concepts, theories and methods of linear algebra, with a large number of examples and exercises. This book is rich in content, concise in language and accurate in topic selection, which is suitable for the teaching and review of linear algebra courses for undergraduates and above.