Yi Yi was a beggar brought back by the eldest daughter of the Yi family. No one knew her origins, and no one took her seriously. It wasn't until many years later when she became Princess Qi, the emperor's personal title, that they suddenly realized that the person they were really afraid of was her.
Princess Qi is arrogant and domineering, but she is deeply trusted and favored by the emperor. This makes the ministers and the master of the harem quite angry, but there is nothing they can do about it. They tried to find out where she came from, but they didn't expect that she was already plotting to rebel...
Purpose: Patriotism