Although the process of scraping nitrate in the manure tank is slow, after nearly a year of collection, the stock of nitrate powder in Xia is still relatively objective, except for most of it is used to produce gunpowder, and the rest is used to improve people's livelihood.

Although Wang Lang has not done this experiment before, there is no shortage of theoretical knowledge, and after a few attempts, it is easy to make ice cubes.

After the success of the experiment, Wang Lang did not hide his secrets, and immediately handed over this method to the Ministry of Industry.

It was definitely a cool thing to stay near ice blocks in hot weather, but nitrate was an extremely precious resource, and even the emperor would not dare to be so extravagant.

Ice cubes can only be used to their greatest value when they are placed at the trading post, and you can only wait until you find nitrate ore later.

Mu Feng felt the slightest coolness in the palm of his hand, and was deeply curious about this magical thing like ice, as a scholar of the Ministry of Industry, he naturally knew what nitrate was, originally thought that this thing was just one of the materials of gunpowder, but he couldn't imagine that it could be used like this, and his heart couldn't help but increase his respect for Wang Lang a little more.

Carrying fresh ingredients, Mu Feng walked along the paved streets towards his home.

Almost all of the homes of the courtiers of the Xia Kingdom were in the inner city, which was also the most prosperous place in the world.

Receiving the bustling pedestrians coming to Wang Lang, there are even some private vendors on the roadside peddling their own caught prey, or some daily necessities made by themselves, and some rough ornaments.

Yancheng has changed so much that it is a little unrecognizable to Mu Wei.

Just as Mu Feng was slowly feeling the difference in Yancheng, a voice suddenly came from behind him, "Mu Shangshu!" ”

Mu Feng looked back when he heard the sound and saw that it was Kong Er who was walking towards him with a few people.

"Kong Shangshu, long time no see!" Mu Feng smiled.

Kong Er patted Mu Feng's shoulder and smiled: "When did you come back, why is there no news at all." ”

"I just came back today, I just told Your Majesty about the situation at the harbor, and I'm really going to return home, I don't know where Kong Shangshu is going at this time?" Mu Feng said lightly.

Kong Er said: "What can I do, this season's tax has just been collected, and it has only been a few days since I rested, I just met you today, how about going to eat with me and have a few drinks for the day." ”

"This... I've just bought some food and I'm about to get back home, so I'm afraid it's not convenient. Mu Feng hesitated for a moment, shook the things in his hand, and said apologetically.

Kong Er looked at the things in Mu Feng's hand, his eyes fell on the yellow hairpin, and he couldn't help laughing: "I didn't expect Mu Shangshu to still love his wife, I didn't notice it just now, I won't disturb you and Mrs. Zun's reunion today, if you have nothing to do tomorrow, you can come to eat for the day, let's get together." ”

Mu Feng smiled: "Definitely, Mu will definitely come tomorrow." ”

"Then I won't bother much, farewell!" Kong Er arched his hand, took his guard, and left in a hurry.

"Food is the sky!" Mu Feng whispered, shook his head, and walked towards home.

Pushing open the courtyard door of his house and seeing the woman drying clothes, Mu Feng suddenly felt warm in his heart, and stood quietly next to the courtyard gate, watching the woman busy.

When the woman saw Mu Feng standing in front of the courtyard gate, she was suddenly startled, "Why are you standing there without making a sound at all, I am so scared that my heart is about to jump out." ”

Mu Feng smiled and said, "Seeing that Madame is so attentive to her work, she is a little stunned, hehe." ”

When Mu Shi heard this, his face turned red inexplicably, and he said, "Why did you come back so soon and finish talking to Your Majesty?" ”

Mu Feng nodded and said, "Your Majesty saw that I had been away from home for so long, so he didn't keep me longer, I sold some wine and meat, you can get it for a while!" ”

Mu Shi took the wine and meat, frowned and said: "There is still a lot of food at home, why did you buy so much, this meat is very agreed to spoil at home, it is better to go to the trade post to buy fresh when you want to eat it." ”

Mu Feng chuckled when he heard this: "Where did you come from so many words, I finally came back for a few days, and today we will also have a luxury, just like Your Majesty said to drink and eat meat, right, children?" ”

"Gong'er just fell asleep, don't wake him up, he doesn't know you now, it's time to cry when you wake up, it sounds like a headache." Mu said softly.

Mu Feng nodded, took out the hairpin from his belt, and said, "This is for you." ”

Seeing this hairpin, Mu's eyes suddenly lit up, and he exclaimed: "The butterfly hairpin, it's exactly the same as the queen's, how could you buy such an expensive thing." ”

Mu Feng didn't answer her words, but said: "If you buy it, you can buy it, where is it so much, take it and try it." ”

Mu Shi happily took the hairpin, carefully inserted it in his hair, hurriedly ran to the water tank, and looked at his appearance at the reflection in the water tank.

Looking at his wife wearing a butterfly hairpin, Mu Feng muttered to himself: "This woman has such a thing, and it really looks different." ”

"Thank you, Mr. Thanks." Mu said happily.

Mu Feng smiled and said, "Don't take it, I'll go sleep for a while, and wake me up when the meal is ready." ”

When Mu Shi heard this, he hurriedly stepped forward to take off Mu Feng's clothes and hang them aside.

Just as Mu Feng was enjoying a family reunion at home, on the northern grassland, the five horsemen rushed quickly in the direction of Yancheng.

When they arrived at the city gate, the soldiers guarding the city immediately stopped them, "What people! ”

"We are from General Shiyue's hands, there are documents to be handed over to Your Majesty, please open the door!" One of the leading cavalrymen said respectfully.

When the soldiers defending the city heard this, they said expressionlessly: "Riding is prohibited in the city, please get off the deer." ”

The cavalryman was stunned when he heard this, and he didn't know when there were more rules here, but seeing that the soldier's appearance didn't seem to be deliberately difficult, he ordered: "All get off the deer." ”

Seeing this, the harvest soldiers waved their hands, and the heavy wooden door slowly opened.

After the cavalry entered the city, they suddenly noticed that this place had changed so much, and they didn't know where to go.

The leading cavalry took the lead in coming back to his senses and said, "Don't look at it, it's important to send the documents to Your Majesty first." ”

When everyone heard this, they led the giant deer and hurried towards the inner city.

In the "palace", Wang Lang looked at the animal skin in his hand, because Shi Yue used charcoal to write it at that time, after such a long journey, he was already a little blurry, but Wang Lang still barely recognized the meaning of it.

Putting away the paperwork, he said to the cavalrymen: "I have read General Shi's documents, and when you go back, tell him that the supplies will be delivered soon, so that Shi Yue and Zhao Jian can capture those wild people as soon as possible." ”

"Yes!"

Several soldiers stood up in response.