After Buddhism was introduced into China, in the process of syncretization with Taoism, a gikyo (apocryphal scripture) was made called "Enra-o Juki Shishu Gyakushu Sho Shichiojo Jodo-kyo Sutra" (閻羅王授記四衆逆修生七往生浄土経; for short, "Yoshu Juo Shoshichi-kyo Sutra" [Sutra of Jizo and the Ten Kings]), and Juo-shinko (10 Kings belief) was established in the late Tang period.
仏教が中国に渡り、当地の道教と習合していく過程で偽経の『閻羅王授記四衆逆修生七往生浄土経』（略して『預修十王生七経』）が作られ、晩唐の時期に十王信仰は成立した。