When Shu-heng was two and half years old, his first bike riding test was a nearly six-kilometer stretch from New Hukou to the old part of Hukou. The very next day he doubled the distance to 12 kilometers.
小兒子書恆兩歲半時，第一次單車上路的考驗，是從新湖口到老街近 6 公里的路程，第二天，立刻翻上一倍── 12 公里。