Xiangyushu 相雨書

Xiangyushu 相雨書 is a book on divination about rain or – in modern terms – about meteorology – written during the Tang period 唐 (618-907) by Huang Zifa 黃子發.

The transmitted version of the text approaches the topic from nine different angles, like five-day and fifteen-day periods (hou qi 候氣), the inspection of clouds (guan yun 觀雲) and the movements of the planets, listening to the sounds of the wind, calculating the progress of time (tui shi 推時), taking into consideration the phenomena of the living world, or prayers for rain or good weather.

The text is preserved in the series Shuofu 說郛 (Wanwei Shantang 宛委山堂 edition), Jianxi cunshe huike 漸西村舍彙刻, Congshu jicheng chubian 叢書集成初編 and Yuhan shanfang jiyi shu xubian 玉函山房輯佚書補編.