This topic examines China's literary achievements in ancient times. The poems in the title stem are from The Book of Songs, National Style, Nan Zhou and The Book of Songs, Wind and July respectively. The Book of Songs is the first collection of poems compiled by Confucius in China, which contains poems from the Western Zhou Dynasty to the mid-Spring and Autumn Period, and lays the foundation for the realism of classical literature. Item B, Jing, is the earliest existing history book in China. Item C "Li" introduces the ancient laws and regulations and moral norms of China; Item D, Spring and Autumn Annals, is the earliest chronological history book in China. Choose a for this question.