Why is Japan called Japan?

Why is Japan called Japan? As mentioned above, the English word Japan has a circuitous derivation; but linguists believe it derives in part from the Portuguese recording of the early Mandarin Chinese or Wu Chinese word for Japan: Cipan (日本), which is rendered in pinyin as Rìběn (IPA: ʐʅ˥˩pən˨˩˦), and literally translates to “sun origin”.

As mentioned above, the English word Japan has a circuitous derivation; but linguists believe it derives in part from the Portuguese recording of the early Mandarin Chinese or Wu Chinese word for Japan: Cipan (日本), which is rendered in pinyin as Rìběn (IPA: ʐʅ˥˩pən˨˩˦), and literally translates to “sun origin”.