While walking on a bicycle with his friend, a Dutch girl, Rika Meelhuiysen, at a bend in the road, he bumped into his father, Soekarno. He was afraid not because he had hit his father but because he was in a relationship with a Dutch girl because previously, he had told her that his father and mother hated the Dutch.
Then he wanted to apologize to his father and promise not to do something like that again. Then his father said, “That is very good. In short, this is the only way to improve your Dutch.” At that time, Soekarno was preparing to take the Dutch elementary school entrance exam (Europeesch Lagere School), and Dutch was the most critical subject (Roem, 1972 p. 152)