When he was healthy, "CCK's step was firm and he walked with vigor," says Chiang Chih-tai, who was with CCK in the early days. After his surgery, his vision wasn't as good as it had been before.
身體健康時，「經國先生的腳步穩健，走起路來霹靂啪啦，十分踏實」，早期跟過經國先生的蔣志太說。