Emperor Ku

Traditional annalistic and mythographic sources present Ku (born Kù, lineage name Gaoxin) as a descendant of the Yellow Emperor and grandson of Shaohao; some versions give his father as Jiaoji. He bore exceptional birth-portents (the Bamboo Annals reports he was born with double rows of teeth) and rose to sovereign status: he used the lineage-name Gaoxin until receiving imperial authority, whereupon he added the title Di and became known as Di Ku. Accounts vary between treating him as a semi-historical ancestral ruler and a mythic sage-king; later calculatory chronologies (e.g., Liu Xin) place his reign in speculative early third millennium BCE dates, but the annalistic sources themselves do not supply verifiable territorial extents for his rule.

Sources give a limited anthropological portrait: the Bamboo Annals records Ku as 'born with double rows of teeth' and possessing 'the wisdom of a sage.' Narrative motifs also describe him undertaking seasonal rides — by dragon in spring and summer and by horse in autumn and winter — a patterned activity reported in the tradition (Lüshi Chunqiu / compiled summaries). Mythic accompaniment such as a phoenix dancing at imperial musical performances is attested in ritualic contexts rather than as literal zoological description.

Ku's attested functions are ritual, cultural, genealogical, and political rather than occult combat powers. Textual traditions credit him with commissioning the invention and organization of ritual musical instruments (drums, bells, chimes, pipes, ocarinas, flutes made by the subordinate Youchui) and with sponsoring composers/score-titles (works named jiuzhao, liule, liuying attributed to assistants such as Xianhei). He is reported to have consulted diviners concerning succession, to have sent generals on campaigns (Bamboo Annals names a general Chong defeating Yukwai), and to have suppressed rebellions (e.g., Shuqi). He is also presented as progenitor of lineages—sons such as Houji and Xie are linked to later dynastic founders, and Yao is named among his descendants in some lists.