With Li Shimin's approval, the headquarters of the Datang Overseas Intelligence Bureau was relocated to Chang'an City. After Li Su entered the East Palace, Liang Wang's Mansion was empty, so he asked the Overseas Intelligence Bureau to move in.

The Overseas Intelligence Bureau is called "Datang Foreign Trade Second Bureau" to hide people's eyes.

After returning to Chang'an with Zhao Dashan, after settling down in the original Liang Palace, they came to the East Palace to meet His Royal Highness the Prince.

As soon as the two entered the courtyard of the East Palace, they saw Li Su sending Changsun Chong and An Ning out. When he was under Xue Yantuo Khan Yinan, he could force Princess An Ning to be very light, but An Ning was rescued by hanging.

She was very embarrassed, and she stepped forward and saluted, saying, "Your Royal Highness, the princess." ”

What happened back then, also because of the persecution of Yi Nan, Changsun Chong and An Ning experienced the test of life and death together, and their feelings were deep, and now they are very happy. The grievances of the year have long been forgotten.

Princess An Ning saw the embarrassed appearance of the sticker, and said with a smile: "Director of the sticker, don't worry about the previous things, each is his master." Speaking of which, Brother Chong and I still have to thank you, if it weren't for your coercion back then, Brother Chong and I would not be as happy as we are today. ”

Speaking of this incident, Changsun Chong remembered the scene back then, and still had palpitations. He said to Li Su: "Thank you, Your Royal Highness the Prince, if it weren't for your rescue back then, Your Royal Highness the Minister and Princess would probably have been dead long ago." ”

Not long ago, Changsun Chong and An Ning had just rescued Li Su. However, this matter cannot be said in an open place. Li Su smiled: "You're polite, each other." ”

An Ning said: "Sixth brother, if you have something, just be busy, Brother Chong and I will leave." ”

Li Su, Xiao Tie and Zhao Dashan came to the study. He reported to Li Su about their experience in the Western Regions over the years.

With the efforts of Mistie and Zhao Dashan, and with the strong financial support of Li Su, the Overseas Intelligence Bureau has developed rapidly, and so far, 32 countries close to the Western Regions have their subordinate branches, and their tentacles have even penetrated into the Great Food Empire and the Roman Empire.

As for them personally, they have had a good time these years. He is now a second-class earl from the fourth grade, and Zhao Dashan is a second-class viscount from the fourth grade. The two followed the example of Li Su and Li Dan and married a pair of daughters of the former King Qiuzi. The heart is wide and fat, and it is a bit blessed.

After listening to their reports, Li Su took them to meet Li Shimin.

Tai Chi Hall, Li Shimin's study.

Li Shimin, Li Jing, Fang Xuanling, Wei Zheng, Hou Junji, and Cen Wenwen listened to the reports of Xiao Tie and Zhao Dashan together.

After the report between Po Tie and Zhao Dashan was finished, Li Shimin asked: "Prince, what do you think if you let them report these situations?" "He knows Li Su and knows that he must have something in mind.

Li Su unfolded a map of the Tang Dynasty. said: "Father, my lords, there are 17 countries around Datang, including four on the sea and 13 on land.

The navigation world is currently underdeveloped, so the maritime neighbors can be ignored for the time being, and there are so many countries on land that are a threat to Datang all the time. At present, these countries are not strong enough, but once they become strong, it will be a disaster for Datang.

Datang should constantly weaken the surrounding enemies, and if it can adopt military means, it will adopt military means. If military means cannot be used, economic means must be used.

When it comes to war, it is easy for people to think that they have lost money and labor, but in fact, it is not. Datang should maintain military pressure on neighboring countries, constantly strike at the forces of neighboring countries, and weaken their strength. Let them never pose a threat to Datang.

There are two advantages to fighting a war: First, the army's combat effectiveness is created, and only by constantly fighting can the army be tempered and the experience of the generals and soldiers be enriched.

Second, it is possible to make a fortune by fighting a war, and there are many strategic materials in neighboring countries, which Datang can rob, or use military pressure to force them to sell to Datang at a low price, and at the same time, it can also dump Datang's products......"

Li Su instilled a lot of knowledge about geopolitics in the Tang Dynasty, and he proposed that the Tang Dynasty should maintain the status quo in the Western Regions and the grasslands, support Tuyuhun, and use military and economic means to weaken Tibet.

At the same time, he organized an expeditionary force to attack the southern countries, obtain rubber and other resources there, and then conquer Liaodong and Goryeo and other countries. For these countries, those that can be annexed will be annexed, and those that cannot be annexed for the time being will be supported by puppet regimes.

Wait for the Tang Dynasty to pacify the southern and northeastern regions, and then turn back and defeat Tubo, the biggest threat to the Tang Dynasty. In this way, Datang will be able to maintain a state of peace for a long time.

After the events on the grassland, especially those in Tubo and Tuyuhun, the top brass of Datang has accepted a preemptive way of thinking.

After the restructuring of the army, the army of the Tang Dynasty has been greatly improved in terms of organizational form, education and training, the quality of soldiers, and weapons and equipment. Li Jing and other military generals have long been holding back the use of troops abroad, and he first expressed his support.

Although Hou Junji is a secretary of the ministry, he still has a military position, and when he heard that he was going to fight, he said: "The minister agrees with the opinion of His Royal Highness the Prince, if you don't fight, the minister's bones are loose." Please ask the emperor to approve the minister's resignation from the post of secretary of the ministry, and the minister will be ordered to go on the expedition. ”

The ministers deliberated and agreed with the prince.

When discussing the object of the conquest, Li Su opened a box he brought with him, took out a few pairs of rubber-soled shoes, and showed them to everyone.

"These soles are hard-wearing and practical, and they're made of rubber," he says. The tires of Erchen's carriage, as well as those basketballs and footballs, are all made of rubber, and it can be said that rubber is very versatile and can greatly change the life of Datang.

However, Datang does not produce rubber, and the main planting area is in the area of Linyi (Vietnam), so such a strategic resource must be in the hands of Datang. ”

At this time, Li Shimin was immediately moved, and he said: "Rubber is a good thing, and it should belong to Datang." ”

The ministers were all moved, and everyone was thinking, why should such a good thing be in the hands of a small Lin Yi?

As a result, everyone unanimously adopted the opinion on the use of troops in Linyi.

At the meeting, it was decided to expand the Flying Tiger Army from 3,000 to 12,000 people. The expeditionary force was organized, which was initially set as 3 cavalry divisions and 2 infantry divisions, and two baggage regiments, with a total of 85,000 people. First of all, he sent troops to conquer Lam Yen (Vietnam).

It took half a year to prepare, and the General Staff was responsible for the deployment and training of troops. During this period, the Overseas Intelligence Bureau was responsible for investigating information about Linyi, and the Ministry of Engineering was responsible for building roads along the way.

The coordination between the relevant departments is the responsibility of the prince.

After the meeting ended, Li Shimin and Li Su conspired separately.