834, Princess Wencheng

In the eighth year of Zhenguan (634), Songtsen Gampo took the initiative to send envoys to the court. When the Tang Taizong sent Feng Deyao to comfort him, Tubo sent an envoy to the Tang Dynasty again, and brought a large number of gold and silver gifts, and offered to marry, hoping to be like the Turks and Tuyuhun, Princess Shang, and marry the Tang, but was rejected by the Tang Dynasty. Songtsen Gampo then became angry with Tuyuhun, thinking that Tuyuhun, who was close to Tang, was sowing discord from it, "Langzan (Songtsan Gampo) was angry, and led the sheep to fight Tuyuhun together, Tuyuhun could not be overbearing, and he walked the yin of Qinghai and took all his livestock." ”

"Dunhuang Ben Tubo Historical Documents" Zanpu biography said: "Later, Zanpu personally went out on patrol, and in the northern province, he neither sent a single army to resist, nor did he send a single army to attack, forcing the Tang people and Tuyuhun people to lose tribute. Thus, for the first time, the Tuyuhun people were brought under his jurisdiction. "It is a bit exaggerated and untrue to make the Tang people lose their endowments, and it is not false to include Tuyuhun and some of the people under his rule.

Subsequently, the Tibetan army attacked Songzhou of the Tang Dynasty, winning first and then defeating. Songtsen Ganbu sent an envoy to apologize and ask for marriage again, and Taizong allowed it. Songtsen Ganbu sent his great minister Lu Dongzan (Dongzan Yu Song, Gar Dongzan) to donate 5,000 taels of gold and hundreds of other treasures to welcome relatives.

In 641, Emperor Taizong married the princess with the daughter of the clan, and ordered the secretary of the Ministry of Rites and the king of Jiangxia County to marry, and sent the princess to Tubo on a festival. Songtsen Gampo led his troops to Baihai and greeted him at the source of the river. The princes and nobles of Tuyuhun also came to greet them.

Songtsan Gampo saw Taizong, performed the gift of his son-in-law, marveled at the beauty of the Tang Dynasty's clothing and etiquette, and then released his felt fur, attacked the silk, and gradually admired the Chinese style. said to himself, "My father and ancestors did not have access to the country, and now I have the princess of the Tang Dynasty, which is a lot of luck." Build a city for the princess, that she may boast to her offspring. "Then he built a city and built a building to live in. The princess did not like the custom of ochre noodles of the Tibetan people, so Songtsen Gampo ordered the temporary abolition of the middle school in the country, thus setting off a trend of learning Tang culture.

It is said that in addition to the Tibetans, the envoys who welcomed the princess of the Tang Dynasty at that time also included people from India, Gesar, Dashi and Hoer. For this reason, Tang Taizong decided to set the level with his intelligence, so there was a historical event of "five difficult marriage envoys". As a result, Lu Dongzan's skills were superior, and he won the favor of Emperor Taizong, and then completed the task of marriage envoy excellently. He tied the silk thread with an ant and passed through the small hole of the jade bead; 100 hens and their chicks were identified by luring hungry chickens with sake lees; Use the method of releasing wood in exile to distinguish the roots and tips of 100 logs; Use the method of taking turns to eat, eat the mutton, drink the wine and knead the sheepskin; also secretly borrowed the help of the palace maid to make himself go to the banquet without getting lost, found a place to stay, and identified Princess Wencheng from 300 beauties. The historical and cultural significance of Princess Wencheng's marriage has far exceeded the political role expected by the rulers. Therefore, the Tibetan people regard Princess Wencheng as Green Tara. and performed the Tibetan opera "Princess Wencheng" to praise it.

In 680 AD, Princess Wencheng died in Tibet. This is a great proof that "war comes from women and from love". After Tang Fan married and Princess Wencheng got married, the Tubo army withdrew to the plateau and reconciled with Tuyuhun, and Tuyuhun was temporarily at peace. After the death of Songtsen Gampo, the Tibetan nobles Gal family came to power, the Tang-Tibet War expanded, and the Tubo army was destroyed in the third year of Longshuo (663). The Dunhuang Historical Document of Tubo records the Great Treatise on Tubo (blo

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He inspected the historical facts of the Tuyuhun region, among which the great discussion of the Song of Dongzan Dongzan (i.e., Lu Dongzan) visited Va zha yul (Tuyuhun) every year for eight years from 659 to 666, which shows the importance attached to this area.