The story of Princess Wencheng marrying Tubo Zambson Zagambo in the Tang Dynasty has been circulated for more than 1000 years. The marriage between Han and Tibet has promoted national unity, especially played a positive role in the economic and cultural development of Tibet. At that time, advanced production technologies such as textile, architecture, papermaking, wine-making and pottery-making of Han nationality, as well as Confucian classics, calendars and medicines were introduced into Tibetan areas one after another. At the same time, the Han nationality also absorbed a lot of Tibetan culture.

Princess Wencheng lived in Tubo for nearly 40 years (died in 680) and did a lot of work for the friendship between the two nations. The craftsmen who went to Tibet with the princess introduced the production technologies of farm tools manufacturing, textile, silk reeling, construction, paper making, wine making, pottery making, grinding and metallurgy from the Central Plains to Tibet. Before Tubo, the agricultural technology was rough, the land was not flat, there was no boundary, there was no building, and it was easy to lose water and soil. After the introduction of Han agricultural technology, Tibetan working people began to open up wasteland and furrow, and the fields crisscrossed, greatly increasing the output. The water mill brought by the princess is very popular with the working people. The princess and her maid also taught Tibetan women the techniques of textile and embroidery.

Songzan Gambo and Princess Wencheng have made great contributions to the friendship between the Han and Tibetan nationalities and the social progress in Tibet. Today, the Potala Palace and Jokhang Temple in Lhasa are also dedicated to the statues of Songzan Gambo and Princess Wencheng. The Potala Palace still preserves the remains of their wedding bridal chamber. The legend of Liu Tang in front of Jokhang Temple was planted by the princess herself. Tibetan history books have devoted a lot of space to recording the story of the princess.

Princess Wencheng was ordered by her father to bring a large number of guards, ladies-in-waiting, craftsmen and artists, as well as a large number of silks and satins, classics, medical books, food and so on.

From Chang 'an to the west, through Gansu, to Qinghai, through Sun Moon Mountain, through Daheba, to the source of the Yellow River. In order to ensure the princess a pleasant journey, Emperor Taizong ordered the imperial court to build roads and bridges, build boats and rafts, build Buddhist temples and open passages along the way. Songzan Gambu personally led Manchu officials and a large group of people to meet their relatives in Baihai (now Zhaling Lake and Eling Lake) and held a welcoming ceremony here. Then, Songzan Gambo and Princess Wencheng went to Luodian to get married hand in hand. Princess Wencheng not only sowed the seeds of Sino-Tibetan friendship on her way to Tibet, but also left many places of interest and beautiful legends. Princess Wencheng's marriage to Tubo not only opened a very important and far-reaching first page in the history of the ancient Tang-Tubo road, but also went down in history as an important event between the Tang Dynasty and Tubo.

1 More than 300 years ago, Princess Wencheng of the Tang Dynasty left the prosperous capital Chang 'an (now northwest of Xi City, Shaanxi Province) and traveled about 3000 kilometers westward. After many difficulties and dangers, she came to the snowy plateau and married Songzan Gambu, the king of Tubo, which strengthened the cultural exchange between Tang Yu and Tubo and promoted the friendly exchanges between China and Tibet. The story of Songzan Gampo and Princess Wencheng is still widely circulated among the Han and Tibetan people.