There is a record of Sima Guang borrowing Zuo's Spring and Autumn Annals in Zi Tong Zhi Jian. Sima Guang also likes the description of Zuo's Spring and Autumn Annals in the Biography of Wen Yuan in the History of Song Dynasty. It is said that Sima Guang once heard about Zuo's Spring and Autumn Annals and liked it very much, so he borrowed it to study it carefully. Sima Guang is knowledgeable and has a deep research on ancient books. His love for Zuo Chunqiu can also be understood as his love for ancient books.