据《续日本纪》等日本史籍记载,公元8世纪80年代,日本桓武天皇迁都长冈京,在京南约10公里的交野郡柏原之地设圆丘以祀天神。其缘由乃是仿效中国唐代皇帝于每年十一月冬至之日祀昊天上帝于京师长安城(有时也在东都洛阳城)南郊之圆丘,却又有其独特的政治目的,在古代中日两国交流史上有着重要的意义。 According to the “Continuation of the Japanese Ji” and other Japanese historical records, in the eighties of the eighth century, the emperor Huanwu relocated to the capital of Okayama, about 10 kilometers south of Kyushu-gun Kashiwagi to set the dome to worship the gods. The reason for this is that the emperor of the Tang Dynasty in China honored Haotian Emperor in the mound of the southern suburbs of Chang’an City (sometimes also in Luoyang City of the Eastern Capital) on the occasion of the winter solstice in November each year, but has its unique political purpose. In ancient times, The history of exchanges between China and Japan is of great significance.