"Cheng Qian, tell me, what is the situation with Zhangxiong?" Hearing Luo Tong say that Songtsen Gampo was so extraordinary at a young age, the competitive Li Shimin had the idea of fighting for his son.

Li Chengqian, who was born early to win, was shocked, and said without hesitation: "It should be the strength of Tubo, and the alliance between Tuyuhun and Tubo makes Zhangxiong, who is caught in the middle, feel uneasy, so he came to Datang from afar, intending to solve the dilemma by attacking and interfering with close and distant friends!" ”

Everyone thought so, and Li Shimin motioned for Li Chengqian to continue!

"The minister is presumptuous there!"

Li Shimin nodded!

Li Chengqian met his father's encouraging gaze, and his heart warmed, so he followed his own train of thought and said: "Father, can you know why the Qin State was so strong during the Spring and Autumn Period and the Warring States Period?" And why can it dominate the world? ”

Li Shimin frowned, this seems to have nothing to do with the current theme! But in the spirit of encouragement, he still replied seriously: "The strength of the Qin State lies in the sage of the kings of the past dynasties; The ability to dominate the world lies in Qin Shi Huang's eloquence and strong economy! ”

"What my father said is very true!" Li Chengqian nodded and said: "Erchen thinks that this is just one of them, even if there is no Qin Shi Huang, the unification of the six countries by Qin is also the trend of the times, and the existence of Qin Shi Huang only accelerates the pace of unification!" ”

"What do you mean by that?" Li Shimin and others were immediately interested.

"At the beginning, the Qin State was a barbarian, but when Qin Shi Huang ascended the throne, the comprehensive national strength of the Qin State was far above the six countries, so with or without Qin Shi Huang, the result was the same. The key lies in the geographical advantage, the Qin State occupies the natural danger, and they have never been the only ones who beat others, but they have not been beaten. Therefore, the national strength has been steadily and continuously developed and enhanced. And the six countries are hostile to each other, fighting for years, intriguing, and the gap between the two sides is naturally getting bigger and bigger. ”

Li Shimin, who said something, nodded frequently.

"Brother Luo Tong said that Songtsen Gampo is Qin Shi Huang! Didn't my father, uncles, and uncles think that Tubo was very similar to the Qin State during the Warring States Period? Li Chengqian suddenly pulled the conversation to the point.

Li Chengqian's words moved everyone!

Luo Tong's high-minded remarks made them focus on the four ministers of Songtsen Gampo and Tubo, so they did not consider the aspect of geographical advantages!

Li Chengqian jumped out of Luo Tong's circle of thoughts, and said something else, which showed his alertness and assertiveness. As soon as this move comes out, no matter what his next performance is, it is worthy of praise.

Li Chengqian's analysis of the Qin State was quite thorough, and Li Shimin thought the same in his heart.

In the Warring States Period, the siege equipment was not perfect, so the natural danger of the Qin State had never been breached, and even the alliance of the Six Nations had nothing to do in the face of the natural danger of the Qin State. In addition to developing its national strength with the help of natural risks, the Qin State sent troops from time to time to take advantage of it, just like Li Chengqian said, only had the qualification to beat people, and there was no possibility of being beaten.

However, the six eastern countries are interconnected because of their territory and no natural dangers, so they are fighting and intriguing. After the development of successive monarchs, the national strength of Qin Shi Huang's generation has surpassed the comprehensive strength of the six countries.

Therefore, everyone did not oppose Li Chengqian's sentence that the Qin State unified the world as the general trend, and did not oppose it.

If Tibet is really like the Qin State, then the problem is quite serious.

Like the Qin State, Tubo will continue to gather strength and become stronger and stronger, and it is not impossible to even catch up with the Tang Dynasty. It's just that everyone doesn't understand that the natural danger of Qin is Hangu Pass, and it is the dangerous road of Bashu, so what natural danger can Tubo defend?

Li Shimin asked Luo Tong the question in his heart: "Is there any natural danger in Tibet?" ”

Luo Tong smiled: "Whether there is any natural danger or not, let's listen to the prince!" ”

Li Shimin was stunned, but when he accidentally caught a glimpse of the gratitude in Li Chengqian's eyes, he immediately understood Luo Tong's intentions, and he couldn't help laughing at himself: It's really going back more and more, and now it's clear that Cheng Qian is being tested better, if Luo Tong says it, wouldn't it cut off Cheng Qian's thoughts? Isn't this a blow to the child?

The eldest grandson Wuji, Fang Xuanling, Du Ruhui, and Hou Junji also had an appreciative attitude towards Luo Tong's indisputability.

"Tubo is not familiar with it, but I also know that Tubo does not have such natural hazards as Hangu Pass, how can it be compared with the Qin State during the Warring States Period?" Li Shimin, who came to his senses, said the doubts in his heart very seriously, and at the same time gave Li Chengqian enough respect!

Li Chengqian was excited, this was the first time that the dialogue between father and son had this kind of treatment, so he attached great importance to it, took a deep breath, and said: "Tubo is indeed not dangerous, but I remember that when Brother Luo Tongxian joked with Murong Xiaojun, he said that when I arrived on the plateau, I would cause pain, palpitation, shortness of breath, loss of appetite, fatigue, fatigue, dizziness, nausea, vomiting, bloating, diarrhea, chest pain, insomnia, dizziness, drowsiness, dizziness, dizziness, numbness of hands and feet, convulsions, and a series of symptoms of unadaptation!" When our army arrives there, once the above symptoms appear, is it not better than a lamb to the slaughter? Hangu Pass can also detour and open up shortcuts, which is the real natural danger of the ubiquitous water and soil? Brother Luo Tongxian, isn't that so? ”

Luo Tong replied: "It is true that there are no dangerous natural hazards in Tibet, but their climate is a chasm that is more difficult to cross than natural hazards for us Central Plains people!" This climate of theirs, I gave it a name, is called altitude sickness. Altitude sickness is so terrible that it can cause people to die in their unwitting sleep. ”

Luo Tong's face was serious, and no one knew better than him how great the impact of altitude sickness on ancient people was. Even in modern times, this altitude sickness is still not well controlled.

Because he knew that the Tang Dynasty's estimation of the plateau climate was seriously underestimated, and there were four major defeats in the battles between the Tang Dynasty and Tubo over the years, namely the Battle of Dafeichuan, the Battle of Qinghai, the Battle of Surohan Mountain, and the Battle of Yinzhijia River.

The Battle of Dafeichuan, the Tang Dynasty's 100,000 troops were all annihilated; In the Battle of Qinghai, the 180,000 Tang Army was almost wiped out, in the Battle of Surohan Mountain, the more than 100,000 Tang Army was defeated, and in the Battle of Yinshujiahe, the 200,000 Tang Army was annihilated.

It is worth mentioning that these places are located on the Qinghai-Tibet Plateau, although the strength of Tibet was also one of the reasons for the defeat of the Tang army, but the existence of the plateau climate was indeed a nightmare for the Tang army.

In general, in the battle between the Tang Dynasty and Tubo, the Tang Dynasty won more and lost less, but because of the plateau climate, it was difficult for them to achieve excellent results. So, now that Luo Tong has traveled to this era, he must stop this kind of thing from happening.

Li Shimin said: "Since you said that altitude sickness is very harmful to our Central Plains people, what about Tibet? Won't they feel unaccustomed to the water and soil when they go down to the plateau? ”

Luo Tong replied: "Yes! But it's not too harmful! That's why I agree with the prince's statement. There is no natural risk in Tibet, but natural risk is everywhere. For example, when a troop of 10,000 people from our Tang Dynasty arrived in Tibet, at least forty percent of them fell ill and died, and the remaining sixty percent had only fifty percent of their combat strength. And the 10,000-strong team of Tubo came to my Datang, and the most of them were lost without a battle of five hundred, and they would not die, even if they were sick, they could maintain seventy or eighty percent of their combat strength. ”

Everyone's expressions became grim, doesn't this mean that Datang will always be beaten passively?

The eldest grandson Wuji asked, "Didn't you say that rhodiola can relieve altitude sickness?" ”

"How can medicine last, the war is not one or two hundred people, let alone a day or two to end! Where do you get so much rhodiola? When the eldest grandson sends out scouts, be sure to prepare enough rhodiola! ”

The eldest grandson Wuji nodded silently!

Everyone also bowed their heads and pondered, if it is really as Luo Tong said, then Tubo will inevitably become a fierce rival of the Tang Dynasty in the future.

"Prince, please continue!" Luo Tong smiled at Li Chengqian, this tragic prince brother in history is really extraordinary!

Li Chengqian smiled gratefully, Luo Tong gave him opportunities everywhere, how could he not know! When Li Shimin and the others came back to their senses, they continued: "The Zhangxiong Kingdom sent the eldest prince as the main envoy, and did not hesitate to use the eldest princess and relatives, which shows that the alliance is very sincere, and at the same time, it also shows that the form of Zhangxiong is very bad. Zhangxiong and Tubo live together on the plateau, have the same climate, is the most suitable to support the country to deal with Tubo, Tubo is far more harmful than the Turks, Erchen believes that the Tang Dynasty should do its best to support Zhangxiong, in times of danger, can even send troops to help. ”

Fang Xuanling said with a smile: "Your Highness is not afraid of raising tigers?" ”

Li Chengqian said confidently: "Qin Shi Huang, King Qin, eldest grandson Fang Du, Li Jing, Qin Qiong, how can they be so easy to deal with?" If it's really easy to deal with, Zhangxiong won't take the initiative to kiss in a hurry. ”

"Qian'er, you have such an insight!" Li Shimin looked up to the sky excitedly and smiled, patted Li Chengqian's shoulder heavily, and laughed: "Not bad, not bad!" I see that Songtsen Gampo is no different. ”

Li Chengqian grinned at it, but he was overjoyed and excited, this was the first time that his domineering father recognized himself so much!

"Humph! What about Qin Shi Huang? Our father and son joined forces to destroy this Tibetan Qin Shi Huang. Zhangxiong's affairs are based on Qian'er's opinion! Tomorrow, Qian'er will meet with Prince Zhangzhung on behalf of me, and will be fully responsible for the alliance. Li Shimin laughed, and it could be seen that he admired Li Chengqian very much.

Li Chengqian replied solemnly: "Son, I will live up to the trust of my father!" However, Erchen needs to be assisted by one person. ”

Everyone laughed! You don't have to guess who Li Chengqian wants!

"Exactly! With the help of this sinister and cunning fellow, I am even more relieved. ”

Luo Tong has a black line, is this a boast or a scolding? suddenly remembered the princess Yaochi who took away his first kiss, and suddenly said urgently: "Then what should I do?" It won't really make me the first ever to be a pro-man, right? ”

"How?" Li Shimin was stunned, and said with a black face: "Now let you marry a beautiful woman and stop it?" Could it be that if you don't want your life for the country and the people, you can't deceive me? ”

Luo Tong wanted to cry without tears: "Can this be the same?" ”

"'The rise and fall of the world is the responsibility of the husband', you said."

"The other party is a princess, I'm just a poor student, and my identity is insufficient!" Haha, finally found a good reason.

"That's right!" This time it was Li Shimin's turn to catch the blind.

"The protégé of the Son of Heaven, the weight is sufficient!" Du Ruhui nodded.

"Haha, what do you say?" Li Shimin laughed proudly.

"I'm engaged!" It seems that I have heard Mrs. Luo mention it, but I don't know if it has been decided.

"It's okay to let Princess Yaochi be a flat wife, they don't care about this thing anyway."

"What if my mother doesn't agree?"

"Heaven and Earth Monarch, I have taken up two things, and I have the final say."

“……”