  The “Numbers and Techniques” (shu shu) section includes the names of texts on astronomy, and cosmology in the sections titled Patterns of Heaven (tian wen 天文) and Calendars and Chronologies (li pu 歷譜). Additional information appears under sections titled Five Agents (wu xing 五行), and morphoscopy. Patterns of Heaven includes texts on divination by stars and weather phenomena (clouds, mists, qi configurations), and mapping the constellations. Calendars and Chronologies includes texts on calendric computations and movements of the heavenly bodies. Five Agents also contains mantic texts concerning prognostication by yin and yang and the Five Agents, including portents, hemerology, calendric astrology. A subsection titled Turtle and Yarrow (shi gui 蓍龜) contains texts on turtle-shell and yarrow divination, including the Zhou yi (Zhou Changes), the original text of the Yi jing or Book of Changes. Two other subsections address Miscellaneous Divination (za zhan 雜占) and Morphoscopy (xing fa 刑法), including works on geography, physiognomy, and topomancy.