He just got the same reward as Cheng Yaojin.

It seems that it is just a verbal reward.

Zhang Xutuo stood up and said, "Your Majesty, saltpeter ice was created by Ao Wu. When he taught people to use the frozen method to make salt in the salt field, he used the method of saltpeter ice."

As soon as these words came out, Yang Guang's eyes immediately glowed.

A wonderful achievement is a small matter, and saying that it is a capable person is a superficial praise.

These two amazing skills appear on one person together, and then this person is truly amazing.

"You really did it?" Yang Guang got off the boat all the way, and some people had heat stroke. Today, they ate ice and were much better, so the wine was not as good as ice.

"That's true." Ao Wu replied without being humble and arrogant.

"How did you think?"

"It's just that you pay more attention to the small things around you on weekdays. You find that saltpeter falls into the water, which will make the water cold. Therefore, you find that if saltpeter is too much, it can freeze the water." Ao Wu is very bragging, but his tone is always calm and stable. "Mysteries are everywhere in life, as long as you have a pair of eyes that discover details."

"What an eye that needs to find details!" A wet woman's voice rang.
Chapter completed!