Chu Yun explained the whole process in a few words.

Bai Wanyi was still very confident in Lu Yan's fighting ability. She didn't think he would be seriously injured in a military competition. However, to show off, she still applied medicine to him gently and in a gentle tone: "How did you get hurt so badly? You didn't even tell me. Did you see a doctor? How are the people around you taking care of you?"

The series of questions seemed to be concerned, but Lu Yan, who had seen how Bai Wanyi loved him deeply, how could he not see the perfunctory tone in her words at this moment?

Lu Yan reluctantly waited for her to apply medicine to him, then found an excuse to drive her out.

Bai Wanyi obediently put down the medicine and reminded Lu Yan: "You must take the matter of requesting a title for me to heart."

Lu Yan nodded: "I understand."

Lu Yan originally intended to help Bai Wanyi get a title, as this was the honor he brought to his wife as a husband. Naturally, his wife's presence also represented his honor and face.

Bai Wanyi went out to find the Fourth Prince. She was not shy about entering and leaving the Fourth Prince's Mansion. She symbolically went to the Fourth Prince's concubine's courtyard and then went to the Fourth Prince's study.

"I want you to send a ship out to sea to find excellent grain varieties. This is corn, and this is potato. I have drawn them for you. Just look for them according to this. The yield of corn per mu can reach more than 1,000 kilograms, and if all potatoes are planted in good farmland, the yield can reach more than 10,000 kilograms." Bai Wanyi dropped a bomb directly.

She never thought that this was ancient times, and without the support of modern spending, it would be impossible to achieve modern high productivity.

The Fourth Prince thought she was crazy: "Going out to sea? Are you kidding me? What's there in the vast ocean? You might as well ask someone to catch fish."

"There are islands and land on the other side of the sea, so of course there are people." As a time traveler, Bai Wanyi remembered the time traveler's golden finger. Potatoes, peppers, corn, tomatoes, high-yield products and fresh and addictive seasonings. She grabbed a piece of paper from the table and began to draw a world map: "Corn originated in Central and South America. South America is right here. You can just build a ship and go there."

Although Bai Wanyi couldn't draw a specific and detailed world map, he could still draw the general outline and location: "Start from here, Tianjin Port Wharf, and head all the way to the other side of the sea. It will take about a month to sail and we will arrive."

The Fourth Prince looked at the diagram, then at Bai Wanyi as if he were looking at a madman. "Let's not even talk about whether there are people or land on the other side of the sea. Let's just talk about the sea waves. How big a ship would be needed to navigate? How big a sail would be needed? How many people would be needed to row the boat?"

There weren't many questions, but they really stumped Bai Wanyi. She asked unwillingly, "Are there no people from overseas these days? Blonde-haired, blue-eyed?"

The Fourth Prince nodded and then shook his head. "Those with blond hair and blue eyes all came from further west in the Western Regions, along the Silk Road. There haven't been any visitors from overseas yet."

Bai Wanyi still refused to give up: "What about the south? Suzhou, Guangzhou, Hong Kong?"

The Fourth Prince frowned and looked at Bai Wanyi: "What places are you talking about? The south of our continent is Nanjiang, and the southeast is Dongwu. You haven't seen the map of the Great Zhou, right?"

The Fourth Prince could never understand Bai Wanyi. She seemed knowledgeable and understood everything, but she had no idea about the Four Books and Five Classics.

I had never heard of the place she was talking about or the words she was saying, let alone understood them.

Bai Wanyi squatted for a moment. She had indeed never seen a map. Even when she followed Lu Yan to fight at the border, the only map she had access to was of the Wugu Pass area.

Seeing her shake her head, the Fourth Prince turned around and pressed on the wall twice. Just when Bai Wanyi thought that the bookshelf would slide open to reveal the secret passage, a creaking sound came from above her head. She looked up and saw a huge scroll slowly falling.

It took a full quarter of an hour before the scroll landed in front of Bai Wanyi.

She stared at the scroll in amazement, her fingertips running across the southern border area at the bottom, and looking along the edge of the continental plate bit by bit. The map in her memory overlapped in some places, but was completely different in some places.

The Fourth Prince watched her movements from the side. Seeing her expression change from shock to familiarity, and finally to sudden realization, he raised an eyebrow and asked, "Why? The map is different from what you expected?"

It is naturally different. This continental plate should be the ancient continental plate, which has not yet experienced changes such as drifting and major earthquakes. Even at this time, Africa and the Eurasian continent are still closely connected.

On this map, Bai Wanyi is only familiar with a few places - the Yangtze River, the Yellow River, the Himalayas, and the Changbai Mountains.

"How is it?" The Fourth Prince looked at Bai Wanyi's expression carefully.

Bai Wanyi shook his head, then fell to the ground. "I'm fine, I'm fine."

She has always been proud of her identity as a time traveler, who can control everything and look down on everything. Now, the existence of the entire continent has overturned her cognition.

The Fourth Prince watched Bai Wanyi stagger away coldly, sneered, turned around to look at the map, and reached out to pull on the wall. The map slowly rose and retracted, revealing another map.

"What a fool! How can anyone read a map?"

He picked up the map drawn by Bai Wanyi, and his fingertips swept over the places that Bai Wanyi had just mentioned on his own map.

Although Bai Wanyi's map was rough, it could be seen that the general outlines of the two maps were similar.

Although the place names are different, based on her performance, the Fourth Prince has also found towns with a high probability of being similar. A person who has never been to Eastern Wu and Southern Xinjiang actually knows so much and can even draw a map. What is Bai Wanyi's origin?

And is what she said true?

The Fourth Prince really wanted to give it a try.

Building a ship and sailing to sea is impossible, but...

The fourth prince's eyes fell on Dong Wu's position. After thinking for a while, he called his staff in. Qin Wan could exchange a few grains for a princess. If he found the corn and potatoes mentioned by Bai Wanyi, what would his father give him?

The Fourth Prince's gaze gradually became fanatical. Although he didn't know how many shi were the one thousand jin or ten thousand jin that Bai Wanyi mentioned, it would definitely be more than six shi or seven shi.

Lu Yan didn't know that Bai Wanyi had gone to the Fourth Prince's Mansion, and he wouldn't care even if he knew. Husband and wife are one, his honor belongs to Bai Wanyi, and naturally Bai Wanyi's honor can only be his.

So, the next day, Lu Yan's request for a title was delivered to the emperor's desk.

Xie Qing happened to be there too. He glanced at the petition for title that the emperor had glanced at and then thrown aside, then looked at Lord Wu who was waiting outside the door, and waved to him kindly.

How could Lord Wu dare to enter the imperial study without being summoned?

The emperor noticed his little gesture, then looked at the memorial requesting the title, and nodded at him with a smile: "Let Minister Wu come in."

Lord Wu greeted the guests upon entering, and when he was called, he presented his memorial and stood aside waiting to be questioned.

Xie Qing handed the memorial to Lord Wu. His expressionless face was as unfathomable as the emperor's. "Lord Wu, the Marquis of Pingyang submitted a memorial today requesting a title for his wife. However, his family is a little special; she is a concubine. My father and I are unsure who the Marquis of Pingyang is requesting a title for. Do you know?"