A few days later, Belus was finally summoned by Li Zhen, but the Persian prince, who was still a little depressed when he entered the palace, came out a few hours later, but he was already in high spirits, and his whole person was full of vitality, as if he had changed people.

Immediately after that, Belus left Beitianzhu, this time he first arrived at the island of Ceylon, and then took Li Zhen and the warrant to see Liu Renliang, through Liu Renliang's arrangement, he rushed back to Taiwan by boat, and took a letter written by Li Zhen himself, asking to see Li Zhen.

At this time, Li Su was being troubled by the Javanese plague, and if it weren't for Belus holding Li Zhen's letter, he really wouldn't have seen Li Su. However, when Li Su read Li Zhen's letter, he immediately summoned Wang An and others to the palace with a solemn face, and then a few days later, Li Su wrote a letter to Li Shimin, which focused on what kind of country Dashi is, the domestic political and religious structure and the desire to expand outward, and finally pointed out that if the expansion momentum of Dashi is not curbed now, then there will be a battle between Datang and Dashi in the future!

Li Shimin has always been very convinced of Li Su's judgment of an uncertain prophet, so after he saw Li Su's letter, he also attached great importance to it, and even personally visited Li Jing, who was seriously ill, and introduced the situation of the big food to Li Jing, wanting to hear the opinion of the Tang Dynasty military god.

As a result, Li Jing ignored his serious illness, forced himself to lie on the map and calculated for several days, and finally came to a result similar to Li Su, and according to Li Jing's calculations, with the current defense of the Tang Dynasty in the west, it is likely that it is not a cannibal opponent. After all, the two protectorates of Anxi and Beiting were too far away from the political center of the Tang Dynasty, and it was impossible to mobilize too many elite troops.

Compared with. The Great Food did not have this concern, and they could mobilize more than 100,000 elite troops from the Great Food Peninsula at any time. There may also be more followers. Coupled with the combat effectiveness shown by the Great Food Army now, unless the Tang Dynasty has more than 50,000 elite troops stationed in the two capital protectorates all year round, it will definitely suffer a big loss when facing the Great Cannibal in the future.

It was also this conclusion that Li Jing came to that finally made Li Shimin make up his mind to send an army to interrupt the pace of the eastward invasion of the great cannibals, and by the way, to help the Persians, so that they could take a breath and gather the scattered Persian army. Make it a buffer zone between Datang and Dashi.

However, the Tang Dynasty's assistance to Persia is only the first step of the four-person plan of Li Shimin, Li Su, Li Zhen and Li Yun, and there will be an even bigger plan in the future, and the target of this plan is naturally Da Shi, which is in a period of rapid rise. However, the steps required to implement this plan are complex and take years or even more than ten years, and the main thing now is to help Persia and preserve this very appealing banner of Persia.

A few months later, Belus set out with an army of 40,000 men to the Protectorate of Ansi. The main general was served by Qibi He Li, and the other famous general Xue Wanche served as his deputy, and the two of them were also the main generals who came to the aid of Persia this time.

Speaking of Qibi He Li and Xue Wanche, these two people are one and the other. It is said that the Hu people have a strong temperament and like to be impulsive in both fighting and acting, while the Han people are generally more rational. But these two people are the opposite. Although he is a Hu man, he has always been known for his calmness when fighting. And he is extremely good at seizing fighters, and likes to surprise with surprise troops. Deeply won the art of war of the steppe. Li Shimin said when evaluating his art of war that let Xue Wanche lead the troops, either a big defeat or a big victory, there is no third situation, which shows the characteristics of this person.

However, Qibi He Li and Xue Wanche have their own shortcomings, such as Qibi He Li likes to be jealous of people who are higher than him, which makes his relationship with Li Jing, Li Ji and others not very good, while Xue Wanche has no one in his eyes, and his popularity in the court is also very poor. But at the beginning, He Li had saved the lives of the Xue brothers, so the personal relationship between the two of them was very good, which was one of the reasons why Li Shimin sent the two of them to cooperate.

Not long after the army led by Qibi He Li to aid Persia left Chang'an, the Tang Dynasty passed a Western Regions highway network plan, planning to build a transportation network based on cement roads between the major cities in the Western Regions west of Yumen Pass in the next fifteen years, with these flat cement roads, the Tang Dynasty's army could appear in all corners of the Western Regions in the shortest possible time, which would greatly increase the Tang Dynasty's rule over the Western Regions.

In addition, a wide cement road had been built from Chang'an to Yumen Pass, but Li Su suggested to Li Shimin that it was best to build a railway on this section, which would greatly shorten the distance between Chang'an and Yumen Pass, and also strengthen the connection between the Tang political center and the Western Regions. Moreover, in order to convince Li Shimin, Li Su also took Taiwan's round-the-island railway plan as an example, although this railway plan is less than a quarter completed, but it has greatly promoted economic and cultural exchanges throughout Taiwan.

Li Shimin has already heard of trains, and he also knows that many railways have been built in coastal cities such as Dengzhou and Shanghai, and they have also greatly promoted local economic development. Some time ago, various newspapers also discussed the convenience brought by the introduction of trains in the Guanzhong area, and even the DPRK and China also had this idea, so now when Li Su proposed to build a railway from Chang'an to Yumen Pass, although Li Shimin felt that this railway was too long, he was not very surprised.

The reason why the Western Regions is not easy to manage, the key is that it is too far away from Chang'an, and the appearance of the train is undoubtedly a good way to shorten the distance, although this plan may cost a sky-high price, but later after the assessment of Li Shimin and the ministers, it is completely necessary to build a railway from Chang'an to Yumen Pass, after all, the income brought by the Western Regions to the Tang Dynasty every year is not a small amount.

Just after Li Shimin decided on two huge transportation plans, Li Su immediately sent a special team from Taiwan to Chang'an, which was organized by some professionals with experience in designing railways, and in later generations they were railway engineers like Zhan Tianyou, who would measure the distance from Chang'an to Yumenguan and design the railway route.

If you want to build a railway, there are two problems that need to be solved, the first is the design of the route, which requires special talent exploration, and after several years of development, Li Yu has cultivated such a group of talents, and now he has sent them all to Chang'an. The second problem is the production of steel, after all, the railway needs to use rails, and the steel needed is not a small amount, so the people who are designing the railway route have not yet arrived in Chang'an, and Datang and all parts of Taiwan have begun to build steel plants on a large scale, hoping to gather the strength of the two countries to build this significant railway successfully.

In addition, Li Shimin also did his best to help with Li Shimin's plan to build a road network in the Western Regions, such as the cement output in various parts of Taiwan, which will give priority to the needs of Datang.

In fact, this is also a deal between Li Su and Li Shimin, the Tang Dynasty assisted Persia at the beginning, and Li Su contributed to help the Tang Dynasty build a transportation network, in order to strengthen the Tang Dynasty's rule over the Western Regions, as for Li Zhen and Li Yun, their strength is still too weak for the time being, so at this stage, it is still mainly to develop their own strength, when they will unify the entire Tianzhu, when will they have the strength to participate in the big food plan.

For the rise of the Great Food, Li Su was vigilant enough from the beginning, this great empire of theocracy was invincible in history, the territory of Asia, Europe and Africa was overwhelming, and even later defeated the army of the Tang Dynasty and obtained the right to rule Central Asia. Fortunately, the current Great Food is still in the initial stage of outward expansion, so he still has time to stifle the other party's expansion momentum.

However, Li Su also knew that the Great Food was not a doomed empire like the Western Turks, but a new empire with infinite vitality, and if he wanted to defeat such an enemy, it was naturally not something that could be done overnight. But this is not a big deal, his navy has sailed to the east coast of Africa, and he can threaten the hinterland of the Great Food at any time, and the Tang Dynasty is also in the way of the Great Food's eastward expansion, and it is not something that the current Great Food can provoke. In addition, Tianzhu's Li Zhen and Li Yun have also developed rapidly, and when they also grow up, they can fight Dashi with Li Su and Datang from three sides, and no matter how strong they are, I am afraid they can only end up with hatred.

After Li Su finalized the huge plan to curb the Great Eclipse, he finally breathed a sigh of relief, and then put his energy into the plague on the island of Java. However, although the plague on the island of Java involved most of Li Su's energy, Taiwan still made a major decision during this time.

Taiwan has also formulated a similar development plan to Datang, that is, to solve the traffic problems in various places, but unlike the roads built by Datang, most of Li Su's sphere of influence are islands, so the traffic naturally depends on ships, and steam ships have undergone several improvements after the development and application of the past few years, and now the steam ships are not only faster, but also the hull is larger, and the cargo is more, and it can be popularized on a large scale.

It is also in order to promote steam ships on a large scale, Li Su has made improvements in various important ports, such as storing a large amount of coal and fresh water in each port, so as to facilitate the refueling of steam ships, and the production plant of steam ships has also expanded its scale and opened new factories, so that the output of steam ships is getting higher and higher, but the cost is getting lower and lower, and it has the advantage of competing with sail ships.

However, the promotion of steamships is still subject to some restrictions, such as some ocean-going ships, because the supply of coal cannot be solved, so it is still necessary to use sail ships, such as the second American route exploration some time ago. Although the previous exploration did allow Lu Wan and them to reach the Americas, Li Yu soon found that the route explored for the first time had great limitations. (To be continued......)