a journey of a thousand miles begins with a single step, and "many a mickle makes a mickle" means "to accumulate constantly. You can achieve great things. " But a journey of a thousand miles begins with a single step. Emphasize starting from the basics. Many a mickle makes a mickle. It emphasizes the process of accumulation. A journey of a thousand miles begins with a single step. And "many a mickle makes a mickle" is rarely used to persuade others. Explanation: Walking a thousand miles begins with the first step. Metaphorically, things are started from scratch and carried out step by step.
once a word is said, it's hard to recall a promise, and it's a deal. Both have the meaning of "keeping your word". But once a word is said, it is hard to chase after the horse, and it is hard to chase after it. Emphasize that you will never go back on your word. It is often used to mean that you will never take back or remind others to keep your word. "It's a deal" focuses on "it's a deal". Emphasize that words cannot be changed after they are spoken. It often means that both parties should abide by the letter or remind each other to abide by the letter.