In ancient China, early literature was primarily focused on philosophy, historiography, military science, agriculture, and poetry. China, the origin of modern paper making and woodblock printing, produced one of the world's first print cultures. Much of Chinese literature originates with the Hundred Schools of Thought period that occurred during the Eastern Zhou Dynasty (769-269 BCE). The most important of these include the Classics of Confucianism, of Daoism, of Mohism, of Legalism, as well as works of military science (e.g. Sun Tzu's The Art of War) and Chinese history (e.g. Sima Qian's Records of the Grand Historian). Ancient Chinese literature had a heavy emphasis on historiography, with often very detailed court records. An exemplary piece of narrative history of ancient China was the Zuo Zhuan, which was compiled no later than 389 BCE, and attributed to the blind 5th century BCE historian Zuo Qiuming.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What year was the Zuo Zhuan written and released?
unanswerable