Ke Ching-ming's son had accompanied his father to the United States and enrolled in a local elementary school. Their social studies homework assignment involved him going to the library, bringing over 20 books back home, and telling the story of Northern Europe's Vikings through poems or picture drawings.
柯慶明的兒子跟著爸爸到美國念當地小學，他們社會課的作業是，到圖書館抱二十幾本書回來，以寫詩或畫畫的方式，編撰北歐維京人的故事。