There are two ways to extend a business. Take inventory of what you are good at and extend out from your skills. Or determine what your customers need and work backwards, even if it requires learning new skills.

最好的领导者是那些多听少说的人，尤其是在农业这样充满活力的领域。

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。

The essence of mathematics lies in its freedom.