行百里者半九十。
On reaching the last leg of a journey, you are only half way there.
e.g. 行百里者半九十。距离实现中华民族伟大复兴的目标越近，我们越不能懈怠，越要加倍努力，越要动员广大青年为之奋斗。
On reaching the last leg of a journey, you are only half way there. The closer we are to our goal of rejuvenating the Chinese nation, the less we can afford to slack off, the more we need to intensify our efforts, and the more we need to encourage young people to work toward this goal.
