Liu Zhang sighed deeply in admiration. "Twenty million goats! What a gamble! This regent is truly formidable!"

Murong Yan was also very impressed and said, "He even only used the rent of a port for ten years, and hardly used the foundation of the country. Pei Zhiyuan, the regent of Haoyue Kingdom, is really eye-opening."

At this moment, Fu Yi returned to the Marquis' Mansion in high spirits. Seeing four people discussing Pei Zhiyuan in the lakeside cottage, he joined their conversation.

"Are you talking about Pei Zhiyuan, the regent of Haoyue Kingdom?

I've seen him before, he's very young, about the same age as Liu Zhengqing."

Liu Zhang nodded, "As expected, heroes emerge from youth, and they are outstanding."

"Brother, you're back." Ye Wanqing stood up and greeted him happily. "I heard that you went to the capital of Haoyue Nation. I wonder if you saw anything interesting."

Upon hearing this, Fu Yi smiled warmly and said, "Of course I did. I brought back quite a few gifts, one for each person."

Murong Yan praised: "Brother-in-law is really thoughtful. Do you have anything for me?"

"Yes, everyone has one." Fu Yi ordered someone to bring a large box filled with specialties of Haoyue Country.

"Thank you, brother-in-law." Liu Zhang was not polite either. A Rao was recognized as the adopted daughter of Tingnan Marquis Mansion and became Fu Yi's adopted sister. He called Fu Yi brother-in-law, and his voice was very smooth.

Several people crowded over and picked out things that interested them.

"Xu'er, take a look at this." Fu Yi pulled Ye Wanqing over and took out two identical drawings from his sleeves.

"Folding crossbow? This is..."

"This was given to me by the Regent. It was drawn by their armorer. Look, it's exactly the same as yours."

Ye Wanqing took the two drawings and was stunned. Her expression became serious. "Murong Yan, come and take a look."

Murong Yan curiously leaned over to take a look and was also stunned.

"Well, what's wrong?" Fu Yi hadn't figured out what was going on and looked confused.

He instructed the attendant beside him: "By the way, go and invite Brother Jiang Yu over. I have something good to show him."

Murong Yan held the drawing in his hands, his hands began to tremble, and his eyes turned red.

He choked with sobs, his eyes red, "A Xu..."

Ye Wanqing's breathing also quickened. "Still alive."

"What's still alive?"

"I have a very smart younger brother. We lost him last year. We thought he was dead, but we didn't expect he was still alive and had drifted to the Haoyue Kingdom."

Fu Yi looked bewildered. "Murong Yan, what are you talking about? You only have two brothers, so which one is missing? Brother Tao is safe and sound in the southern border!"

"Fu Yi, there's something I need to explain to you." Murong Yan excitedly grabbed his sleeve and said, "This matter is quite outrageous."

Murong Yan and Ye Wanqing asked them to sit down, "Fu Yi, actually, Qingqing is not your sister."

"What!" Fu Yi immediately stood up and pulled the back of Ye Wanqing's neck. Seeing the scar, he insisted:

"She is my sister. Even if the king comes, she is still my sister!"

"Brother, actually..." Ye Wanqing told the people present the whole story of the soul exchange.

Everyone was shocked when they heard it.

Fu Yi said in disbelief, "You mean, you are actually Miss Ye from General Ye's Mansion, and my real sister Xu'er was actually in your body and was killed a long time ago?"

Ye Wanqing nodded and said, "I'm sorry, brother. I don't know how to explain it to you. I'm sorry for keeping it from you."

Fu Yi found it hard to accept. He always thought it was great to have a younger sister and had been trying to make up for his past debt to her. However, it turned out that his real sister had died in someone else's body a long time ago.

He even gloated at that time and said that he deserved to die.

Fu Yi said softly that it was okay, but he could not suppress his sadness.

Liu Zhang also spoke sullenly and apologized to Fu Yi, saying that if he had not indulged Xu Wanrong, his sister would not have died unjustly.

Murong Yan quickly spread out the blueprint and said, "Axu might not be dead. You said this was given to you by the Regent of Haoyue Country. He might know the whereabouts of your sister. This is obviously a blueprint drawn by Axu."

A Rao hurriedly asked: "Is the young lady locked up?"

Murong Yan said seriously, "Then we have to find a way to rescue Ah Xu."

Fu Yi immediately said, "I'm going to go to Haoyue Country again and negotiate with Pei Zhiyuan. No matter how much it costs, I'm going to bring my sister back."

He told several people that he had wanted to see the person who drew the blueprints but was rejected.

Murong Yan thought for a long time and suggested that they should first come up with a plan before inquiring about rescue.

"Then these things are most likely made by my sister?" Fu Yi stroked the self-retractable glider and crossbow in the box with trembling hands, feeling extremely depressed.

Ye Wanqing was also very sad and shed tears, "This year, Haoyue Country was in chaos and war. She must have suffered a lot."

Murong Yan held her hand and said, "The Regent of Haoyue Country is extremely thoughtful. We must come up with a foolproof plan."

Liu Zhang lowered his eyes and stared at the map on the table, stroking his chin in deep thought.

After a long while, he said, "Perhaps we can discuss cooperation with the Regent."

Several people asked in unison: "What do you have in mind?"

"He wants to use the goat trick to destroy Beihai. We can give him a push. Show him goodwill and ask him to hand over our princess."

Fu Yi asked, "Then what should we do?"

"They use sheep, so we use wolves. They let the North Sea Kingdom raise sheep for them, so we go to the North Sea Kingdom and buy wolf skins in large quantities and hunt wolves."

A Rao asked in confusion, "Brother Zhang, what are you buying wolf skins for? You can't eat them."

Murong Yan immediately understood and said with a smile, "Of course it will bring an unprecedented catastrophe to the Beihai Kingdom."

Even the two girls were confused, so Murong Yan explained the importance of wolves on the grassland.

"Although wolves may eat herders' livestock, they actually protect the grasslands.

The grasslands of the North Sea Kingdom are not only home to the herdsmen's cattle and sheep, but also many wild herbivores.

When wolves in the area are hunted on a large scale, these herbivores will become rampant and compete with sheep for pasture resources.

This accelerates the consumption of grassland.

Then, next year, there will be a great disaster in the North Sea Kingdom."

Fu Yi nodded. "When the time comes, we will join forces with Haoyue Country to raise the price of grain exports. Then, the gold and silver that Beihai Country has obtained from selling livestock products will return to our hands."

Liu Zhang nodded with satisfaction, "I really want to meet this regent.

We told him this plan and used it to negotiate with him about the princess's matter.

He should understand!"

Murong Yan immediately said, "I will immediately write a letter to the Regent in the name of the Crown Prince, inviting him to discuss cooperation."