都是出卖，卖给中原各国也可以，何必非要卖给越国呢？ 

The market competition is fierce, only continuous learning ensures invincibility.

"The soul becomes dyed with the color of its thoughts."

【释义】：做很多事却少有成效，不如专心做好一件事情。  

每一个挑战都是学习和成长的机会。