In a narrow sense, it refers to the opening line of "Nihonshoki" (Chronicles of Japan): 'Long, long ago, when the heaven and the earth were not separated yet, and light and darkness were not distinguished...' |
狭義には、『日本書紀』冒頭の「古(いにしえ)に天地未だ剖(わか)れず、陰陽分れざりしとき......」を言う。 |