解释：大部分药材都以新鲜为好，但艾草却以陈年的为佳，体现了药材使用的特殊性。
Leadership is not about giving orders, but about inspiring others to achieve greatness.
Sometimes the smallest things take up the most room in your heart.
故事是一种表达无法用其他方式表达的东西的方式。
The secret to success is to know something nobody else knows.
Innovation comes from solving real problems.
