What are the "first" ancient Chinese writings?

The first forensic medical monograph, "Wash the Grievances and Collect the Records"

The first biographical history, "Shiji"

The first country-specific history, "Guoyu"

The first collection of poems, "The Book of Songs"

Shangshu, China's first verbal history

Yi Ri, China's first book of ceremonial rites and rituals

Zhou Yi, China's first philosophical text

Er Ya, China's earliest dictionary and first encyclopedic dictionary

Zuo Zhuan, the first chronicle in China

Er Ya, China's earliest dictionary, the first encyclopedic dictionary of famous objects

Zuo Zhuan, Spring and Autumn Period, China's earliest chronicle

Luoyang Peony Records, China's earliest book devoted to flowers

Nine Chapters of Algorithms, China's first major mathematical treatise

The Book of Tea, China's first treatise on tea, by Lu Yu, Tang Dynasty

Shiyou Xinyun, China's earliest note-taking work by Liu Yiqing, South China's first writer. Liu Yiqing China's earliest collection of novels in the form of notes

Wenxindiao Long (文心雕龙, literally "Carved Dragon"), Liang, South China's first systematic literary theory and literary criticism

Sun Tzu's Art of War (孙子兵法, "The Art of War") Spring and Autumn Period (春春春-孙武, Sun Wu) China's earliest existing book on warfare, and also the earliest military work in the world.

Sun Tzu's Art of War