It is also said that KIBI no Makibi brought home "Hoki-Naiden", a scripture of Onmyodo (an occult divination system based on the Taoist theory of the five elements), from Tang, and tried to hand it down to the descendants of ABE no Nakamaro at the foot of Mt. Tsukuba of Hitachi Province.
また、吉備真備は、陰陽道の聖典『ほき内伝』を唐から持ち帰り、常陸国筑波山麓で阿倍仲麻呂の子孫に伝えようとしたという。