Yuntai is Tang Yan's first large-scale drama after marriage. As soon as the play was broadcast, it attracted everyone's eager attention. Although there are many slots in the play, it also has a high popularity. The play is adapted from Jiang Shengnan's novel of the same name and tells the legendary story of Xiao Taihou's life in Liao country. In the play, Tang Yan plays Xiao Yanyan, Xiao Jiasan's daughter, and Xiao Siwen, the youngest daughter of Liao Prime Minister. Because she is the youngest daughter in the family, she has won many people's attention. She has been very clever since she was a child, but she always likes to make trouble, which makes people love and angry. She was very concerned about her two sisters and always thought of them in her daily life, but in real history, she died at the hands of her two sisters. Xiao Yanyan and Han Derang like each other, and both sides are satisfied.

But Yeluxian also took a fancy to her, so what is the emotional trend of Xiaoyan and Han Derang? In the recently broadcast story, Xiao Siwen was forced by the royal family to marry Xiaoyan to Ye Luxian, and Ye Luxian persuaded Xiaoyan to marry himself through Han Derang. For the sake of imperial power, Han Derang can only do so. In this way, Xiao Yanyan married Yeluxian. Since then, ZSZSZSZ assisted Yeluxian to ascend to the throne, and. After Hu Qian was attracted by Zage, he had to marry him to save his sister. Although she didn't want to marry Yelü zug, she was finally moved by Yelü zug, and the two of them took the guest as their respect. In fact, Hu Qian had a chance to be queen, but she missed it and her husband died.

She was naturally dissatisfied with ZSZSZSZ. Later, Hu Tiao fell in love with another slave. Xiaoyan felt indecent and separated them. Although Xiaoyan finally saw that her sister liked him very much and allowed them to be together, Hu Tiao still hated Xiaoyan. According to historical records, Hu tiao finally rose up, but Xiao Yanyan realized it in advance, so she took a step ahead of schedule.

But in history, Xiao Yanyan's second sister, after Ye Luxian succeeded to the throne, married Ye Luxian to appease him. Later, after Yeluxian became emperor, Yeluxian was very dissatisfied, so he rebelled several times, but all failed. Finally, Ye Luxian couldn't bear it any longer and gave Ye Luxian a death. The second sister thinks that the death of Yeluxian is inseparable from ZSZSZSZ. She poisoned Xiao Yanyan's wine, but when Xiao Yanyan found out, she was indecent. She also gave the second sister a glass of poisoned wine. In this way, her second sister was killed by Xiaoyan. Although Xiaoyan personally killed her two sisters, she was helpless.