The fourth day of the seventh month of the seventh month in 1604 was the first day after the end of the cherry blossom viewing festival.

Yu Xuanran got up early and took his beloved son Yu Ji to the Taishi Courtyard in the royal capital.

Located in the southeast corner of the capital of the Nanfeng Kingdom, the Nanfeng Kingdom Taishi Institute covers an extremely wide area and is the comprehensive office of the national archives, historical books and classics, culture and politics of the Nanfeng Kingdom.

The president of the Taishi Academy is the current Nanfeng Guoyi Taishi, the national teacher Yu Xuanran.

Yu Xuanran was able to serve as the president of the Taishi Academy, not only because he had a close relationship with Feng Huaigu, the king of Nanfeng Kingdom, but also because Yu Xuanran was proficient in history books, the art of war, and was full of economy, and he also had a thaumaturgy of astrology and divination.

At this moment, Yu Xuanran was standing on top of the lecture hall of the Taishi Academy, but there were only four children sitting below. Two of the children are the princess Feng Laiyi and her own child Yu Ji.

The other two children are Nangong Qi, the adopted son of Nangong You, the commander of the Nanfeng ** Department and the dean of the Military Academy, and Nangong Yi, the youngest son. Nangong Yi is as big as Feng Laiyi and Yu Ji, and he was also born in 1600 by Shenlu, but he was born two months earlier than Feng Laiyi and Yu Ji. Nangong Qi is two years older than these three people, and he is already slightly mature, and he has already begun to learn literature and martial arts.

Yu Xuanran looked at Nangong Qi, as if he was a little puzzled, and asked, "Qi'er, why are you here?" At this time, Nangong Qi was sitting and looking at Yu Xuanran, and replied very politely when he heard the question: "Yu Yu Taishi, my father said that Lord Yu is well-versed in the past and the present, and he is a strategist, so he specially ordered me to accompany the third brother to come to learn from Lord Yu." ”

Yu Xuanran nodded, thinking in his heart: "Nangong You has a vision, and he is preparing for the selection of the princess and the horse at such a young age!" Thinking of this, he also shook his head and laughed.

After a while, Yu Xuanran turned his gaze to Nangong Yi, and saw that Nangong Yi was looking at Feng Laiyi sitting in the middle at the moment, unable to take his eyes off and extremely focused. Yu Xuanran coughed twice, and there was a burst of surprise in his heart: "This is what I seem..."

He turned his head to look at his son Yu Ji again, and saw that Yu Ji was holding a book, his eyes were shining, and he looked at the book cover, and what he saw was "The Legend of Yuanlu - The Legend of Huoli". This book is very different from "Yuanlu Immortal Chronicles", which can be said to be a historical book, and most of the records in the book have sources and are seen by people. However, "The Legend of Yuanlu" is an exaggerated novel, written in the form of a biography of a character, and the content of the book is extremely outrageous and imaginary. I couldn't help but feel a pang of chagrin in my heart.

For a moment, Yu Xuanran put away his annoyance, looked at Feng Laiyi in the middle, and saw Feng Laiyi's eyes flickering, looking at himself with a smile, such a cute appearance, Yu Xuanran was in a cold sweat.

The four children here, except for Feng Laiyi, the other three can read tens of thousands of words, and any classic book can be catchy and familiar with the whole text. But these three children began to read and hyphenate when they were two years old. And I heard that Princess Feng Laiyi is extremely disgusted with reading and writing, and now she is only literate 3,000. But her identity is so noble.

Yu Xuanran couldn't help but have a big headache.

Looking at Feng Laiyi, Yu Xuanran thought for a long time, until Feng Laiyi felt bored and looked for Yu Ji on the side to read a book together, Yu Xuanran said to Feng Laiyi: "Princess, Nanfeng has a collection of millions of books, countless historical classics, I don't know which kind of books the princess likes?"

Feng Laiyi turned her head, looked at Yu Xuanran, still immersed in the fight plot in the book just now, and subconsciously said, "Is there a fight?" Yu Xuanran was stunned for a while, but he didn't disobey, and thought for a while: "Does the princess know about the battle of Tianhai City in Nanhaiwan?"

Feng Laiyi shook her head blankly, indicating that she didn't know anything.

Seeing this, Yu Xuanran slapped the stunned wood, saw the four children looking at him in horror, and said, "Okay, let's talk about the defense of Tianhai City in Nanwan Bay in the first class today!"

Immediately, Yu Xuanran took out a yellowed map from the side and hung it on the Chijing speaking board, which turned out to be the distribution map of the countries of the Divine Land thousands of years ago. Although the file of the Nanhai City Protectorate is in the Nanfeng Academy, Yu Xuanran has already known the beginning and end of this battle.

A thousand years ago, that is, when Shenlu was 600 years old, the pattern of the three kingdoms and seven principalities was not formed today, but the countries were fighting, and the borders of the country also changed every few days. At that time, Tianhai Castle belonged to the Fire Departure Country, which was supported by the Suzaku Palace, which was founded by the god of noon.

Tianhai City is located in Nanhai Prefecture in present-day Nanfeng Kingdom, and is one of the several major cities that are still in Nanfeng Kingdom. To the north of Tianhai City is the hinterland of Nanfeng Kingdom, and to the south is the endless sea.

In the land of Shenlu, the shipbuilding industry of all countries is not developed, but in addition to the only city of Tianhai City, the ships of Tianhai City anchored in the South Bay have reached tens of thousands, among which there is also a sea and land fleet of Tianhai City to protect ships from being robbed by pirates.

In the battle of Tianhai City at that time, the monks led by Feng Yuanyi and the remaining army of Huoli Kingdom were only trapped in Tianhai City with a total of tens of thousands of people. A total of 100,000 troops from the east, north, and west sides of Tianhai City came to the city.

After briefly explaining the general situation at that time, Yu Xuanran took out a piece of white paper and hung it on the lecturing board, held a large pen and drew a brief city in the middle of the white paper, and drew a circle on the left and right and above of the city, and wrote the numbers of three, four, and three in the three circles, and drew a semicircular arc to string the three circles, and then drew a few wavy lines below the city.

After finishing the painting, Yu Xuanran asked, "If you are the commander of the defenders in Tianhai City, how can you solve the danger of this siege?"

As soon as she finished asking, Feng Laiyi immediately spoke: "Lead everyone to kill and fight to the death." ”

After hearing this, Yu Xuanran shook his head and smiled, but he secretly thought in his heart: "Sure enough, it's the Feng family!"

At this time, there was another sound, but it was Nangong Qi who said: "Set up a killing formation at the west gate, and let the enemy army at the west gate enter the city." With 10,000 troops against 30,000 troops, with the help of the formation, I believe that with the cultivation of Feng Gaozu's extremely inferior cultivators, he should be able to break through from the West Gate. ”

After hearing this, Yu Xuanran nodded appreciatively, looked at Nangong Yi and asked, "What is Yi'er's strategy?"

I saw Nangong Yi bowing his little head, muttering in his mouth, looking very shy, and whispered: "Leave three thousand sergeants to guard the city, and the rest of the sergeants will go out from the south gate and go by boat... At this time, we should guard our strength and wait for the opportunity to move. ”

Yu Xuanran looked at Nangong Yi deeply for a moment, although this plan was something that ordinary people could think of, but what Yu Xuanran cared about was Nangong Yi's later sentence. It's just that Nangong Yi was still young at this time, and his consideration of the problem was not comprehensive, and he did not take other factors into account.

The battle of Tianhai Castle in Nanhai Bay took place on November 15, 600 years of Shenlu, and in May and November of Shenlu every year, there will be a natural phenomenon called "sea tide" in the South China Sea, whenever the sea tide comes, it will be a hundred times more powerful than the usual high tide, and then the entire Nanzhou Peninsula will be trapped in a vast ocean.

The Nanzhou Peninsula is a long strip of wedge-shaped land embedded in the South China Sea from the southwest coast of Nanhai Prefecture, running from west to east. A piece of the South China Sea is surrounded by the Nanzhou Peninsula and the land ten miles and hundreds of miles long from the south side of Tianhai City, and the entire area formed is called Nanhai Bay, which is a natural harbor.

Therefore, Nangong Yi's plan will lead the entire army to the abyss of death in the end.

At this time, Feng Laiyi looked at Yu Ji and said, "Yu Ji, do you have any plans?" Yu Ji looked at Feng Laiyi, and saw his father, Nangong Qi, and Nangong Yi also looking at him, put down the book in his hand, touched his head, looked a little embarrassed, smirked, and then said: "Select a hundred monks to go to the south bay of Tianhai City to arrange the 'hiding' formation, the defenders in the city will hold on until the evening of the 15th, and then pick out a thousand dead soldiers, and the rest of the sergeants will gradually retreat from the south gate to the 'hiding' formation in the south bay, and wait for all the defenders to retreat to the formation and open the formation." Then the dead soldiers came out of the south gate in groups and went to the Nanzhou Peninsula three miles away. When the three city gates were broken, the enemy troops on the three routes saw the fleeing dead soldiers, thought that the defenders had retreated from the south gate, and then chased the dead soldiers to the Nanzhou Peninsula. After arriving on the peninsula, more than 1,000 dead soldiers only dragged the enemy for half an hour, and when the time came, the tide of the South China Sea arrived, and the entire enemy army would be plunged into the ocean. When the time comes, the tide will recede, and the remaining 9,000 defenders can go to the Nanzhou Peninsula and kill the undead enemy army!"

Yu Ji said this in one go, without the slightest pause, which shows that this plan Yu Ji has already been brewing in his heart.

This is indeed because half a year ago, Yu Xuanran took the Tianhai City Protectorate to test the school Yu Ji, and Yu Ji checked the "Yuanlu Geography" and "Nanfeng Country Geography" in mid-January, and found the phenomenon of sea tides, so he came up with this wonderful plan.

At this time, the other three children in the lecture hall were stunned and amazed.

Feng Laiyi was wondering what Yu Ji said, he didn't understand what Yu Ji was talking about at all, but he heard the words "kill the undead enemy army" clearly, and said in his heart: "Anyway, I can kill all the enemy troops, I don't have to fight to win, my strategy is really right!"

Nangong Qi was surprised that Yu Ji knew the "Hidden Trace" formation at such an age, this array was created by the noon god in the Vermilion Bird Palace, and it was later handed down and now owned by the Nine Heavens Palace. Today's Nine Heavens Palace is hidden on the Shenque Peak in Kunlun Nanshan, and it is precisely because the entire palace has arranged this "hidden trace" formation, and I have also heard my father-in-law Nangong You talk about it by chance. suddenly didn't dare to underestimate this little boy who was two years younger than himself.

Only Nangong Yi was amazed by Yu Ji's admiration in his heart, and was amazed by Yu Ji's intelligence.

Yu Xuanran looked at Yu Ji, and a hint of appreciation flashed in his eyes. Later, he said mysteriously: "This plan is very good, but I also have a plan, but I can only lose more than 100 defenders, and I can kill the enemy!"

After speaking, except for Feng Laiyi, the other three all showed a surprised expression, Yu Xuanran looked at the surprised look of the people below, nodded with satisfaction, and thought to himself: "If you can arouse the princess's interest, you can also sell it." ”

Then he said: "Now you are still young, and you have limited knowledge of the battle of Tianhai City, and you still need to read more historical books, various records of the art of war and immortal cultivation materials, and you may be able to come up with my strategy." After speaking, he looked at Feng Laiyi, his eyes were full of encouragement. But he didn't know that Feng Laiyi was fighting and killing, and he had no intention of scheming at all.

The other three looked at Yu Xuanran and nodded heavily.

After a while, Feng Laiyi didn't seem to get the affirmation of his own strategy of fighting and killing, looked at Yu Xuanran, and asked, "Yu Taishi, how did Feng Gaozu defeat the enemy and win back then?"

Hearing this, Yu Xuanran actually smiled bitterly, seeing that the other three were also full of expectations, he said slowly: "Feng Gaozu is heroic and talented, and the strategy he uses is very similar to that of the princess" After a pause, he said: "Maybe under the situation at that time, Gaozu's choice is the most correct!"

When Feng Laiyi heard this, she immediately jumped up with joy, looked at Yu Ji and said, "Look, it's right to fight to the death!" With a bright and bright smile, the three children who watched it were also infected and happy.

After the class, the four children were separated. Nangong Qi and Nangong Yi walked together on the way back to Nangong Mansion, followed by more than ten Nangong Mansion guards.

After the two children chatted about the strategy of protecting the city just now, Nangong Qi whispered to Nangong Yi: "Third brother, why are you staring at the princess from the lecture hall?"

Nangong Yi looked very embarrassed, and his mouth was furious: "When I was three years old, I accidentally touched the princess, but my hand was burned, and now I heard that the princess has recovered from fever, I just want to have a chance to touch her and see if it's okay?"