11/09/15 20:07:12.68 i/al3mmy0
>>452第3段落２
It is a recorded hisotrical fact in ancient Chinese History texts,
and have been in use in Chinese culture up to the present.
(I have not searched for Spring-Autumn Warring State period records or even prior texts for this research.
Had I done it I would probably be able to draw more ancient examples of "East Sea" being the name for "East China Sea".)