[ qiān lǐ zhī xíng，shǐ yú zú xià ]

走一千里路，是从迈第一步开始的。比喻事情的成功，是从小到大逐渐积累起来的。

《老子》第六十四章:“合抱之木，生于毫末；九层之台，起于累土；千里之行，始于足下。”

lit. a thousand mile journey begins with the first step; fig. big accomplishments come from an accumulation of little achievements made one by one