» This article is about the year A.D. 804. For other uses of the term, see 804 (disambiguation). Events By place Asia Japanese monk Kukai visits China, from which he brings back texts of Shingon (Esoteric Buddhism). 804–805 – Priest Saicho, patriarch of Tendai Buddhism, visits China and reportedly brings back tea seeds. Oceania March 25—The Inscription of Sukabumi from Eastern Java marks the beginning of the Javanese language. Europe Charlemagne finishes the conquest of Saxon… (More on 804)