Being good at seizing opportunities is what leaders have in common.

The occurrence of such a big war between the Tang Dynasty and Goguryeo will naturally attract the attention of neighboring countries.

At the beginning of October, the Potala Palace in Tubo (now Lhasa).

The 25-year-old Tubo Tsampu (king) Songtsen Gampo summoned his four famous ministers, Tunmi Sambuza, Lu Dongzan (i.e., Gar Dongzan), Zhi Saidang Rugongton, and Niang Chisang Yangton, to discuss using this opportunity to conquer Tuyuhun.

Lu Dongzan, 29 years old of the Tibetan Foreign Minister, is the right-hand man of Songtsen Gampo and a well-known politician, military strategist and diplomat in Tibet.

In history, it was he who asked the Tang Dynasty for Songtsan Gampo to marry, and Li Shimin agreed to marry his adopted daughter, which is the famous Princess Wencheng.

Lu Dongzan was a very clever man, and he suggested that Songtsen Gampo practice marriage diplomacy. Songtsen Gampo was handsome and dashing, and successively married the princess of two city-states of India and the princess of Nepal, and obtained a stable southwestern border, thus creating conditions for the unification of Tibet.

Lu Dongzan was very much in favor of Songtsen Gampo's strategy of taking advantage of the Tang Dynasty to send troops to Goguryeo to attack Tuyuhun, and he proposed to go to Chang'an to ask for Songtsen Gampo to stabilize the Tang Dynasty.

Songtsen Gampo agreed to his strategy, sending him to Chang'an while preparing to send troops to Tuyuhun.

It's almost the New Year, and Li Su went to the Lizheng Palace to ask to see the eldest grandson queen.

"Sons and daughters, see the queen mother." Li Su saluted respectfully and said.

Empress Eldest Sun said, "The crown prince is here, please take a seat." ”

Li Su said: "The queen mother, the father of the son's concubine Ashina Qing, has come to Chang'an. ”

Empress Eldest Sun felt a burst of excitement in her heart and ordered the maids: "You go down first." ”

After the maids left, she asked, "Is there any news of Cheng Qian?" ”

Li Su handed over a letter and said, "This is a letter from the eldest brother." ”

Empress Changsun hurriedly took Li Chengqian's letter and read it. After reading it, she said with tears in her eyes: "Su'er, thank you, everything is fine in Fengzhou, thanks to your care." Alas, I don't know if he's fat or thin, I really miss him. ”

Li Su said: "Queen Mother, the eldest brother has come to Chang'an secretly, and the son-in-law has already arranged it, just in Hongjiabao, Wannian County, you can go and meet him." ”

Empress Eldest Sun was overjoyed and said excitedly, "Really? Take me there. ”

According to Li Su's arrangement, Empress Changsun first went to the East Palace, and then took the carriage of the East Palace and left the palace.

Li Su arranged for Li Chengqian to come to Chang'an, taking a great risk. After all, Li Chengqian is guilty of treason, and once the news leaks out, it will be very troublesome for Li Chengqian.

However, the Chinese New Year was approaching, and Li Su really couldn't bear to see the sad appearance of the eldest grandson, so he arranged this meeting.

Being able to help Empress Changsun, Li Su was in a good mood, and he called a few princesses and prepared to play cards with them for fun.

At this moment, Yang Kang came in to report that Foreign Minister Tang Fei was coming.

"See His Royal Highness the Crown Prince." Tang Fei said.

"Lord Tang, don't say it yet, let me guess, it's from Tibet, right?" Li Su said.

Tang Fei asked in surprise: "Your Highness, you are really a god, you are the envoy of Tubo, named Lu Dongzan." ”

In fact, this is not unusual, and the Overseas Intelligence Bureau will definitely report to Li Su in advance about a major move in Tibet.

When Li Su came to the Tang Dynasty, he had in-depth research on all the celebrities of this era, and he wanted to see this Tibetan legend.

He said: "Lu Dongzan is a character, he is very smart, you must be careful when dealing with him. ”

Tang Fei already had immunity to His Royal Highness the Prince's magic, and he didn't ask His Royal Highness the Crown Prince how he knew about Lu Dongzan. He asked, "How should the minister receive him?" ”

Li Su said: "You ...... like this"

Tang Fei said: "The minister understands. After saying that, he took his leave and left.

Li Su shouted: "Babies, come out." ”

The princesses walked out happily one by one and talked around Li Su.

Li Su said: "Baby, my husband is getting married, you have to help Zhang Luo Zhang Luo." ”

Qibi Wuyun said: "Yes, Cong'er's mother has come to Chang'an, and it is time to prepare for her marriage." ”

Wu Cong's face was full of surprise, but he said with some concern: "My mother said that there is a war now, so let's wait for the victory of the Eastern Crusade to hold a wedding, right?" ”

Qibi Wuyun said: "It doesn't matter, you are holding a wedding now, which is just a good thing to stabilize the people's hearts." ”

Li Su said: "It's still Yun'er who can see far away, and he is worthy of being born as a Khan." ”

Wu Cong was very happy and said, "Thank you, Sister Wuyun, and thank you sisters." ”

Li Su said: "This matter is decided, and I will report to the queen mother tomorrow." Let her officiate at our wedding. ”

Li Su really intends to do this. Since the Eastern Crusade, although the war has been going smoothly so far, the opponent is a big country like Goguryeo after all. There were few victories in the wars against Goguryeo in history, and it was inevitable that people would be terrified.

At this time, His Royal Highness the Crown Prince held a wedding, which is undoubtedly a major measure to stabilize the people's hearts.

Besides, Lu Dongzan is in the embassy of the Ministry of Foreign Affairs, waiting for the reception of His Royal Highness the Prince. Tang Fei moved quickly, and came to the pavilion the next day, and said to Lu Dongzan: "Your Excellency, His Royal Highness the Crown Prince of my family has been busy deploying military exercises in the past few days, and he asked me to accompany you to visit Chang'an City first, and I will meet you in a few days." ”

Lu Dongzan also wanted to know the true strength of the Tang Dynasty, so he proposed to visit the industrial city, the industrial school and the military academy. He originally thought that the Tang Dynasty of the Military Academy would not let him visit, so he just mentioned it in passing.

Unexpectedly, Tang Fei said: "His Royal Highness the Crown Prince said that Tibet is a friendly neighbor of the Tang Dynasty, and the Tang Dynasty has no secrets about Tibet. His Royal Highness the Crown Prince invites your envoy to visit the Military Academy and the Chang'an Arsenal, in a word, whatever you want to visit, you will be arranged. ”

Lu Dongzan was overjoyed in his heart, but he was a little puzzled, and he didn't know what people had in mind. However, he is still looking forward to visiting the core departments of Datang.

In the next few days, Tang Fei personally accompanied Lu Dongzan to visit the Industrial City, the Industrial School and the Chang'an Arsenal, and the more Lu Dongzan looked, the more surprised he became - the industrial level of Datang was too high, and the huge wealth of the Industrial City and the education level of the industrial school left a deep impression on him.

In particular, he was deeply impressed by the scale of the arsenal. He felt that the gap between Tubo and Datang was too big.

Next, Tang Fei took Lu Dongzan to visit the Datang Military Academy.

Li Xiaogong, vice president (dean) of the Datang Military Academy, personally accompanied Lu Dongzan to visit the military academy's teaching buildings, cadet dormitories, libraries, canteens, and training grounds.

At noon, Li Xiaogong gave a banquet to Lu Dongzan, and in the afternoon, he invited Lu Dongzan to visit the exercises of the Military Academy.

Understanding the real military strength of Datang is also one of the purposes of Lu Dongzan's trip, and his heart is full of expectations.