Tubo people were the ancestors of Tibetan. They appeared on Qinghai-Tibet Plateau at a very early period. They were farmers and herders. In the early seventh century, Songtsen Gampo united the various Tubo tribes, and made Luoxie (today's Lhasa) the capital of Tubo kingdom.

Songtsen Gampo admired the culture of Tang Dynasty, and was eager to form an alliance with that powerful empire. In 641, Emperor Taizong sent Princess Wencheng to him as his bride.

Tubo people used to live in tents. It is said that a gorgeous palace was built specially for her, which was the predecessor of todays Potala Palace.

Princess Wencheng took with her to Tubo medicines, books on science and technology, grain and vegetable seeds, and exquisite handicrafts of Tang Dynasty. In addition, people who were proficient in raising silkworms, making wine and paper, and weaving and embroidering accompanied her, to teach these arts to Tibet people. Princess Wencheng was anardent believer in Buddhism. It is said that the location of Jokhang Temple was chosen by her.

Princess Wencheng lived in Tubo for 40 years, making great contributions to the friendship between Han and Tibetan. She is still remenbered and loved by the Tibetans. Status of Princess Wencheng are preserved in Jokhang Temple and Potala Palace. There are many beautiful legends told about Princess Wencheng among Tibetans.