the scholar to buy firewood

people come with firewood-what's the price

? What's its price?

the exterior is solid but the interior is weak, and there is more smoke but less flame, so please damage it. Your firewood is dry on the outside, but wet inside. When it burns, there will be more smoke and less flame. Please reduce the price.

The reason for not closing the deal is that the scholar used too many embellishments, and the firewood seller didn't understand them at all, so the purpose of buying firewood could not be achieved. If the scholar uses simple and easy-to-understand words to convey information and grasps the object and opportunity of speaking, he may be able to achieve the goal he wants to accomplish.