When did Princess Wencheng and Princess Jincheng live? Who are you married to? What's the point?

Princess Wencheng lived in the Li Shimin period of Emperor Taizong and married Songzan Gambu, the leader of tuya! Its historical significance lies in promoting the communication between Tang and sweet potato and promoting national integration! Books, seeds and technologies brought by Princess Wencheng will promote the economic and cultural development of Tibet! Tang Zhongzong, Princess Jincheng, adopted daughter. In the third year of Shenlong (707), the Tubo Sambo sent envoys to propose marriage, and Zhongzong promised to marry the Tubo Sambo Kridê Zukzain. In the spring of the fourth year of Jinglong (July10), the Tubo sent envoys to welcome the princess into Tibet, and the Zhongzong relatives sent her to Shiping (now Xingping, Shaanxi Province) to give her a brocade sword, a geisha and Qiuci music, and ordered the left-back general Yang Moment to escort her to Tubo and Zanbu to build another city to live in. Princess Jincheng has been in Tibet for 30 years, urging Tang and Tibet to be peaceful. During this period, although Tang and Fan fought many times, due to the efforts of Princess Jincheng, the envoys of the two sides exchanged frequently. Finally, in the 21st year of Kaiyuan (773), Tang and Fan carved a tablet in Chiling (now West Sun Moon Mountain in Huangyuan, Qinghai), and they did not invade each other, and they traded in the ridge.