qiān lǐ zhī xíng，shǐ yú zú xià！
tips：it means that a thousand miles journey begins with the steps made by your feet, indicates that in order to do something further, you need to take step-by-step action。
里：a Chinese unit of length, 1里=1/2km
之：indicates possession，possessive, means "of/的（de）"
下：indicates direction "under", here "足下" means the steps made under your feet.