A historical research group collected the following materials in the process of discussing the topic of "Urban Commercial Development in Song Dynasty". What do you think is the most valuable?

C

Analysis of test questions: Zi Tong Zhi Jian is a historical book, which records the history of Zhou Shizong from the Spring and Autumn Period to the Five Dynasties, but it was not recorded at all in the Northern Song Dynasty, so A was excluded; Blue and white porcelain appeared in the Yuan Dynasty, so B was excluded; Su Shi's Ode to a Spring in Dongting describes the scenery, so D is excluded; Only Zhang Zeduan's The Riverside Scene at Qingming Festival describes the commercial prosperity of Tokyo in the Northern Song Dynasty, so C was chosen.