Gu Lingze waved his hand, looked at Zhao Chengmo and said, "Go home, go home. I'm almost dying of exhaustion."

After returning home, Gu Lingze was so tired that he didn't even bother to lift a finger. He just went to bed, rolled up the quilt and fell asleep.

He slept until the evening. After opening his eyes, Gu Lingze flashed into the secret realm and did not come out until his stomach growled with hunger.

As soon as he opened the door after washing up, he saw Zhao Chengmo sitting on the corridor.

"woke up."

"Well, why don't you go in?" Gu Lingze looked at him puzzled.

"Your second brother won't let you." Zhao Chengmo replied expressionlessly.

Gu Lingze immediately chuckled, Gu Feirui is really a funny guy.

"Have you got a meal yet?"

"Wait for you to join me."

Gu Lingze extended his hand and said, "Let's go and have dinner together."

Zhao Chengmo held his hand and they walked towards the kitchen.

Xie Qingwan had already asked someone to prepare chicken soup, so Gu Lingze and Zhao Chengmo each ate a large bowl of fragrant chicken noodle soup and returned to their room contentedly.

The two chatted about Zhao Chengmo's experience of reading Wubeizhi in the past few days. Gu Lingze was surprised by the speed at which he absorbed the knowledge.

Gu Lingze had read more books than him, but apart from Taoist classics and martial arts techniques, he had not truly mastered many of them. Many of Zhao Chengmo's views were refreshing to him, and gradually the two of them changed their roles, with Zhao Chengmo talking and Gu Lingze listening.

Although Zhao Chengmo usually doesn't talk much, when he talks about this, it's like he opens up and speaks fluently and clearly.

The two chatted until late at night. In the end, because Zhao Chengmo had to go to court the next day, they had to stop chatting and go back to their rooms to sleep.

During breakfast the next day, Xie Qingwan told Gu Lingze that Li Jin had given birth to a boy yesterday afternoon. Both mother and child were safe. The Emperor and the Empress were very happy to have a grandson. The Emperor personally named him Qi Yanjing, which means jade-like brilliance.

"Lingze, yesterday you told the eldest prince that this child was a lucky star, so there was such a big commotion?"

Gu Lingze shook his head. "The process of this matter is a bit complicated. In short, I turned the eldest prince's wife into a human, and her inner elixir was shattered, so it caused such a big impact."

You have to know how much effort he put in to save the lives of both mother and son. With his skills, it was not difficult to kill Li Jin, but to break her inner elixir and let her survive was simply as difficult as ascending to heaven.

Everyone at the table was stunned. They were already shocked when the eldest prince's wife was a carp spirit. Now that the prince's wife had completely turned into a human, they still couldn't believe their ears.

After dinner, Xie Xiru and the others went out to court. Gu Lingze and Xie Luocheng talked about the restaurant. The main thing was that decorating the private rooms was rather troublesome, but in the long run, it was very worthwhile.

"Lingze, the book 'The Exploitation of the Works of Nature' that you asked me to read contains many things that I have never heard of before. It really opened my eyes."

Gu Lingze understood his uncle's feelings. You know, this book is known as the encyclopedia of craftsmanship in the Chinese century. Who knows how much hard work and wisdom of the ancients it has gathered.

Xie Luocheng asked about the drilling technology mentioned in the book, as well as the flower machine that could be used to weave flowered cloth. Gu Lingze could only tell him what he knew based on modern knowledge, and Xie Luocheng had to research the rest on his own.

"Lingze, is there really sugar as white as snowflakes?"

There was sugar in this dynasty, but it was the most expensive of all the seasonings. Moreover, due to the immature sugar-making method, most of the sugar was yellow blocks, and the taste was a bit bitter after the sweetness.

Therefore, the method of making sugar that could produce white sugar as fine as sand recorded in the book deeply attracted Xie Luocheng's attention.

Gu Lingze nodded. "This kind of sugar is called white sugar. It is evenly shaped like snowflakes, white in color, and has a very pure sweet taste. It also has the effect of replenishing the middle and strengthening the Qi."

Xie Luocheng's eyes suddenly lit up, "Lingze, have you eaten it before?"

Gu Lingze laughed dryly twice, "I read it in a book too. I have nowhere to eat even if I want to."

Xie Luocheng was not disappointed after hearing his answer, and said that if he could really make white sugar, he would let him taste it first.

The two then started discussing other topics. When it came to planting in the sand, Xie Luocheng was quite puzzled.

"If crops are planted in sandy soil, their roots cannot retain water, so how can they grow?"

Gu Lingze didn't know much about agriculture, but he remembered that there were several crops that were very suitable for growing in sandy land, so he told Xie Luocheng about it.

"Peanuts, potatoes, sweet potatoes, and even grapes and watermelons are all very suitable for growing in sandy soil. Uncle, practice makes perfect. You will get a conclusion if you try."

Gu Lingze's argument that what you learn from books is always shallow and that you must practice it yourself to truly understand it really convinced Xie Luocheng.

The two were discussing heatedly when Qian Bo walked in from outside.

"Young Master, someone from the Wenxin Marquis's residence wants to see you."

Gu Lingze stood up. Wenxinhou Mansion? Su Wenyu!

"Where are the people?"

"Just wait outside the door."

Gu Lingze followed Qian Bo to the door in big strides and found that it was the maid who was beside Su Wenyu that day.

"Young Master Gu, my young lady...my young lady..." Before she could finish her words, the little girl started crying.

Gu Lingze asked Qian Bo to prepare the carriage, and he took the maid to Wenxinhou Mansion first.

When they arrived at the gate of the Marquis' Mansion, the maid took him to Su Wenyu's bedroom as quickly as possible. When Gu Lingze entered the room, Su Wenyu was lying on the bed with an abnormal flush on her face and she was mumbling something from time to time.

Gu Lingze used the back of his hand to feel the temperature of her forehead, then placed his hand on her wrist to feel her pulse.

"When did your young lady start to have a fever?" Gu Lingze asked with a frown.

"It started last night, but the young lady didn't want to make a big fuss, so the housekeeper went to call a doctor in the morning. Unexpectedly, the young lady lost consciousness after drinking the medicine and kept talking in her sleep."

How could this happen? Gu Lingze tilted his head and thought for a moment, "Didn't your young lady take the beauty pill I gave her?"

The little maid sniffed and said, "The young lady gave it to the second young lady of Zuo Canzheng's family the day before yesterday."

"Lu Manning?"

Gu Lingze was speechless when he saw the maid nodded. Su Wenyu really didn't doubt Lu Manying at all.

"Bring me the dregs of the medicine your young lady drank this morning."

Upon hearing this, the little maid immediately ran to the kitchen, poured the medicine residue from the pot onto the sandpaper, and scooped it up with both hands.

Gu Lingze picked up a brush from the table beside him and brushed away the residue. There was no problem with anything else, but he frowned when he saw the Isatis indigotica.

Su Wenyu had a high fever, and there was nothing wrong with using the cold herb Isatis indigotica to reduce the fever, but Su Wenyu now had Yin energy in her body, and the two collided, resulting in the current situation.