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…Zheng Chenggong was his son. In Japan, he was called Kashira or Itsukan. He accumulated a lot of wealth through smuggling and was invited by the Ming court to become a commander in chief. After the fall of the Ming dynasty, he served King Fu and King Tang, but in 1646 (the third year of the Shunzhi era) he betrayed the Qing army. …

*Some of the terminology explanations that mention "Kokkara" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…鄭成功はその子。日本では甲螺（かしら），一官（いつかん）などと呼ばれ，密貿易に従って巨富を蓄え，明廷から招かれて都督にまで進んだ。明朝滅亡後は福王，唐王に従ったが，1646年(順治3)には清軍に内通した。…

※「甲螺」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報