By Japanese own saying,it means the place of sunrise.It can't be judged as truth or fallacy,however,it's a truth that Japan lies to the east of China and sunrise should be earlier.
Japanese people believe it means where sun rises. Fake or not, we can't tell. But it is the trueth that Japan is to the east of China and they gets sunlights eariler than us.
It is said that the place meaning which the sun raises with Japanese own words . Genuine or fake not flattery, but Japantrulyin China's East and the sunrise should be earlier