In 630, Li Jing led a Tang army to raid the Court of the Eastern Turk King, and Princess Yicheng became a prisoner. In the face of the imposing Tang Jun, she did not change her face and said, "I am a princess of the Sui Dynasty, and Er and other rats dare to."

In 630, Li Jing led a Tang army to raid the Court of the Eastern Turk King, and Princess Yicheng became a prisoner.

In the face of the imposing Tang Jun, she did not change her face and said, "I am a princess of the Sui Dynasty, how dare Er and other rats be unreasonable?" Li Jing said angrily, "You instigated the Khan to make enemies of the Tang Dynasty, and your sin is unforgivable." After saying that, the cold light flashed, and Princess Yicheng fell in a pool of blood.

In the nineteenth year of the Sui Kai Emperor (599), she married Princess Yicheng of Qimin Khan, who was originally the daughter of Yang Huan of the Sui Dynasty, and was later given the title of princess and married to the Turks.

Qimin Khan is also known as the only Turkic Khan of the Sui Dynasty who married two princesses.

After this peace, Qimin Khan had the protection of the Sui Dynasty, and his power grew day by day, and many other tribes surrendered to Qimin Khan.

Under the promotion of Princess Yicheng, the Turks maintained a peaceful and stable relationship with the Sui Dynasty, and after the Sui Emperor ascended the throne, the Turks completely became a vassal state of the Sui Dynasty.

After the death of Qimin Khan, Princess Yicheng married three sons of Qimin Khan, Shibi Khan, Chuluo Khan, and Jieli Khan as Kedun.

Among them, Qimin Khan was old enough to be the grandfather of Princess Yicheng, so he also had great pity for his granddaughter's young wife.

After the death of Qimin Khan, his eldest son succeeded to the Khan's throne as Shibi Khan, and the Sui Emperor requested that his father's wife, Princess Yicheng, be appointed as Kedun, and the Sui Emperor followed the Turkic custom of succession, which promoted the marriage between Shibi Khan and Princess Yicheng.

In August of the eleventh year of Daye (615), when the Sui Emperor was touring northern Cyprus and was surrounded by an attack by The Qibi Khan, and there was nothing he could do, someone thought of Princess Yicheng, who was pro-Turkic.

After secret communication, Princess Yicheng sent people to report to the Turk Khan that there was a situation on the border, which enabled the Sui Emperor to escape back to Yanmen Pass.

After the complete demise of the Sui Dynasty, Princess Yicheng lost her greatest reliance and sustenance.

As a woman who married far away from the political union, she devoted the first half of her life to the great righteousness of her family and country. During the period of harmony between the Turkic and Sui dynasties, Princess Yicheng dutifully fulfilled her duties.

As a link between the two countries, it has played a great role and its status is respected. Even if the husband later dies, the new husband still has to repair the book and ask for marriage.

This was probably the only thing she could be proud of, because of the strength of her mother country, which made her status extremely noble in the Turks.

Shibi Khan died of illness, and Shibi Khan's younger brother, Qilifu, took the Khan's throne by powerful force, in order to "Chuluo Khan", and Princess Yicheng became the wife of Chuluo Khan.

However, chuluo khan was poisoned by Princess Yicheng within a year of his reign, and at this time the military and political power of the Turks was already in the hands of Princess Yicheng, so Princess Yicheng supported The younger brother of Chuluo Khan as the Turkic Khan, and naturally Princess Yicheng became the wife of Yicheng again.

At this time, the Sui Dynasty had collapsed, Li Yuan had occupied the Guanzhong region and established the Tang Dynasty, Princess Yicheng was not willing to see the collapse of her homeland, so she constantly suggested that the Turks go south to attack the Tang Dynasty, and in the early days of the establishment of the Tang Dynasty, the Turks often went south to invade the Central Plains.

After waiting for the third year of Zhenguan, this year was particularly cold in winter, and many of the Turks' cattle and sheep were frozen to death, so the Turks at this time were rebelled, so they could only go to the Tang Dynasty and wanted to negotiate peace, at this time Tang Taizong agreed.

On the way back, they were still lamenting that Tang Taizong was really stupid, it was really a good deception, but they did not expect that at this time, the Tang Dynasty's army would attack them, and they could be said to be caught off guard.

As a result, Princess Yicheng preferred to die rather than surrender, and led the box lunch offline, Empress Xiao and Jieli Khan and others went to Chang'an to enjoy their old age, and Yang Zhengdao's official Zhi Shangyi served the emperor.

Princess Yicheng is a tragic figure, sacrificing everything for the peace of the two countries, in order to find face for the unreliable cousin, as if death were home, she is the last stubbornness of the Sui Dynasty, which makes people sigh.