After quelling the civil strife, conquering Zhuqiang, and reunifying Tibet, the politically far-sighted renunciator Nongtsan actively sent envoys to the neighboring country of Nibora (present-day Nepal) to trade with each other, sell handicrafts, and hire craftsmen and artists to teach them architecture, painting, and carving. On the one hand, get in touch with the Tang Dynasty. It has established and developed close friendship between the Tibetan and Han ethnic groups.

Abandoning the sect and praising the Tang Dynasty has a deep admiration; He sent an envoy to Chang'an to greet the Tang Dynasty. Li Shimin sent an envoy Feng Deyao with a letter to pay his respects.

Abandon the sect and be very happy to see Feng Deyao. He heard that both Persia and Tuyuhun had married princesses of the Tang Dynasty, so he sent the eloquent Lu Dongzan to follow Feng Deyao into the court, send Jinbao, and propose marriage.

As soon as Li Shimin heard that he was going to marry his daughter to the bitter cold land of Tibet, he was very reluctant. Of course, his daughter is not old enough, and the women of the school-age clan who heard the news all expressed their unwillingness to go to Tibet to Li Shimin through various relationships.

Someone begged the head of the eldest grandson, and the eldest grandson had no choice but to plead with Li Shimin. Li Shimin smiled slightly and said: "I don't need a little woman to sacrifice because my Tang soldiers are strong and strong, I have already refused, you tell them not to worry." ”

At this time, the Tang Dynasty was very strong, and the surrounding countries came to the Tang Dynasty to ask for peace; Li Shimin has maintained friendly relations with many countries. This time, Tuyuhun, Persia, and Tubo all sent ministers to make peace; Li Shimin did not take it to heart and did not accede to their request.

I don't know the process, but I attach great importance to this Tibetan team; In particular, the Tibetan envoy Gar. Lu Dongzan, and the deputy envoy Tumi? Sambuza, branch? Serugunton is a figure to be reckoned with.

Lu Dongzan is currently a small treatise on Tibet, which is equivalent to a deputy minister; After the murder of the Great Prime Minister Shang Nang, Lu Dong agreed to be the Great Minister and turned Tubo into a military power in the southwest.

Deputy Envoy Tomi? Sambuza is also very remarkable, he is the former minister of Tibet, once went to Tianzhu, according to the Tianzhu script to create the Tibetan script, so that the Tibetan culture can be inherited.

After Li Shimin rejected their request for peace, Lu Dongzan preached everywhere that it was Tuyuhun who sabotaged Tubo's peace; They made a look of flattering the Tang Dynasty in every way, and pointed the finger at Tuyuhun completely.

The people of Datang were happy to watch the jokes, and no one talked much. Cheng Zhijie found Li Shimin and said, "Your Majesty! Although Tubo and Tuyuhun are both Fanbang, the battle between them has nothing to do with my Tang Dynasty, and it is even happy to see it.

But Tubo and Tuyuhun are different, Tuyuhun's Murong Fuyun is already old, and the king of Tianzhu in China controls the government, like sunset; Lifeless. However, Tubo is just the opposite, abandoning the sect to praise the heroic talent, and his subordinates have more big ministers, and the deputy prime minister Lu Dongzan is a momentary masterpiece; There are also seven virtuous ministers and auxiliary ministers.

They had just put down the civil strife, and were using troops against Subi and Yangtong; It is said that Subi has been conquered, and the abandonment of the sect has taken the ruler princess of Subi and completely annexed Subi; Now the sheep are also precarious, and they may be destroyed at any time.

This abandoned sect praised his talents, which is not trivial, and Tubo is also like the newborn morning sun, full of vitality. After they pacified these two countries, the next step was Tuyuhun in front of them. But what about after the annexation of Tuyuhun? The richness of the Tang Dynasty is impossible for them to give up.

The behavior of the minister Guan Lu Dongzan, the marriage proposal is only incidental, they are paralyzing our Tang Dynasty and making us take it lightly, but they are actually preparing to attack Tuyuhun. ”

Li Shimin nodded and said, "Cheng Aiqing is reasonable, so what should we do in your opinion?" ”

Lao Cheng said with a smile: "No matter how powerful this Tubo is, it is just a small country, and it is not enough to fight with the Tang Dynasty; However, we are not good for 100 days, and flowers are not red for 100 days; We should be careful that Tubo takes advantage of the fire to rob when something goes wrong in our Tang Dynasty.

Therefore, the minister thinks that it is better to completely conquer them, anyway, His Majesty promotes the Yi family; Tibet is still a slave country, Your Majesty wants to liberate the vast number of suffering people and help others make progress together! ”

Li Shimin laughed when he heard this: "Cheng Aiqing is reasonable, the whole world is not the king's land, and the shore of the land is not the king's minister." I can't watch people in the world suffer, and I'm trying to save them. I don't know what good ideas Cheng Aiqing has? ”

Cheng Zhijie hurriedly went up to say a few words, and Li Shimin laughed when he heard it: "Okay! Good! Just do what Cheng Aiqing said. ”

Just when Tuyuhun and Tubo were constantly recruiting for the matter of harmony, Li Shimin suddenly went against the norm and issued an order to agree to peace. However, he declared that only one princess would marry, but he didn't know which one he wanted to give it to, and three days later he would conduct an assessment of the envoys of the three families, and whoever passed the assessment would be able to marry the princess of the Tang Dynasty.

At this time, the envoys of the three families were nervous, and they were able to inquire about the content of the Tang Dynasty's exams and prepare secretly.

Three days later, the three envoys all went to the Taiji Hall to be assessed, and the civil and military officials of the Tang Dynasty also came to watch.

After everyone shouted long live, Li Shimin first took them to the imperial garden, and then let the ministers sit down; Then he said to the three envoys: "The three envoys came to Datang at the same time to propose, and I am very pleased. It's just that there is only one princess, I don't know who she marries in? I decided to set up five tests, and whoever passed, the princess would marry to whomever family. ”

Several envoys hurriedly bowed down and said, "Please ask His Majesty the Emperor of the Tang Dynasty to ask the question." ”

Li Shimin nodded, and with a wave of his hand, someone brought up three trays painted with gold and vermilion lacquer, on which were placed a piece of square jade and a ball of silk thread.

Li Shimin said: "Our first exam question is called Silk Satin Wearing Nine Curved Han Jade, that is, no matter what method you use, without destroying Han Jade, a soft silk satin will pass through the Nine Curved Eyelets of Han Jade. The one who completes it is considered a victory. Now the game begins. ”

The three envoys took the Hanyu and threaded the silk thread into it lightly or heavily, but the Hanyu was a nine-curved hole, and they were in a hurry to sweat but no one finished it.

"It's simply not going to be done?" Whether it is the three envoys or the civil and military officials, they all feel that this assessment is a bit difficult for strong people.

Li Shimin watched quietly without saying a word, and the messengers of Persia and Tuyuhun tried to wet it with water and lead it with sharp things, but they couldn't do it. Lu Dongzan watched coldly, observing secretly, and suddenly he found an ant crawling under his feet, and he couldn't help but think about it.

Lu Dongzan will tie one end of the silk thread to the ant's waist and smear honey on the end of the nine-curved eyelet. Then he put the ant on the other side, and when he saw the ant crawling in, he blew gently, and the ant smelled the fragrance of honey, and with the help of Lu Dongzan's blowing power, he took the silk thread and slowly climbed out from the other side along the curved hole, and the silk thread passed through the pearl of Jiuqu. The Tibetan envoys cheered as they finished the game.

Li Shimin nodded slightly and said, "Okay!" In this game, the Tibetan country won, and now let's play the second game. This time you need to identify the mother-child relationship between 100 horses and 100 foals on the horse farm, so let's do it! ”

The competition began, but I saw that the marriage envoys took turns to identify, some according to the color of the coat, some according to the old and the young, and some to compare the height and shortness, but they were all wrong.

In the end, it was Lu Dongzan's turn, and he said to Li Shimin: "It's not difficult to distinguish their relationship, but the minister needs a day to prepare, please allow Your Majesty." ”

Li Shimin smiled: "Okay! I didn't set a time for the game, but I could afford to wait for a day. The other two envoys laughed in their hearts: "When it comes to knowing horses, none of us is worse than you!" We don't believe you can do anything to get rid of him. ”

The civil and military forces of the Tang Dynasty also secretly exchanged their heads and ears, as if watching how this lean and capable, two-eyed Tubo envoy distinguished the relationship between horses and mothers.

Cheng Zhijie secretly laughed and said, "Come on!" Come on! The better you perform, the closer you are to death. ”

Lu Dongzan had all the mares and foals switched separately, and during the day, only the foals were fed and not given water.

The next day, when the foals were released back into the herd, they were so drunk that they soon found their mothers to nurse, and they were easily recognizable.

Everyone was convinced at first sight, and they all praised Lu Dongzan's clever calculation. Although Li Shimin also praised him, his eyes were a little cold when he looked at Lu Dongzan.

Li Shimin then ordered someone to bring a hundred sticks of length and thickness. The pine sticks of the exact same size allowed the messengers to distinguish between the roots and the tips.

The messengers of Persia and Tuyuhun were dumbfounded, where could they tell the difference? had to admit defeat again, and their eyes all looked at Lu Dongzan next to him, wanting to see how he could tell the difference.

Lu Dongzan laughed and said: "This is simple, just put them in the water and try it." All the wood was brought to the pond in the Imperial Garden and thrown into the water. The roots of the wood sink slightly into the water, while the treetops are lighter but float on the surface, and the roots of the wood are obvious.

At this time, not only the ministers of the Tang Dynasty were amazed, but even the envoys of the other two families were convinced, and some of them had the intention of admitting defeat.

Li Shimin laughed and said: "Lu Dongzan is quick to think, I love him very much, I want to make you the general of the right guard, and I want to marry the granddaughter of the eldest princess of Langya, Duan, to you, are you willing to serve the Tang Dynasty?" ”

Gar? Lu Dongzan hurriedly thanked him but said: "The minister has a wife in his country, and he is hired by his parents, so he can't bear to be obedient." And Zampu did not marry the princess, and the courtier dared to marry? Wanyan declined Li Shimin's kindness.

Li Shimin said a few good words, and then said: "That's the end of today's game, let's play the fourth game tomorrow." ”

When the messengers heard this, they took their leave; Li Shimin left Cheng Zhijie behind and asked: "This Lu Dongzan is really not simple, it will become a problem for my Tang Dynasty in the future, Aiqing can really make him ugly?" ”