Su Yuli, the legitimate daughter of the Su family of the imperial merchant, was smart and talented in business since she was a child. However, due to her mother's early death, she had to live a cautious life under her vicious stepmother. When her father suddenly died of illness, she not only lost her only shelter, but also had her engagement taken away and was forced to marry an old man. In desperate situation, she resolutely took her maid into the palace and became a slave.
In the deep palace, Yuli relied on her extraordinary wisdom and arithmetic skills to rise from a humble palace maid to a high-ranking female official. She repeatedly achieved good results and was deeply appreciated, and even attracted the attention of the prince Zhou Jingheng. However, the palace was strife, jealousy and conspiracy ensued. She was framed repeatedly, but she was always able to avoid danger, and her love for the prince gradually deepened.
The jade carving business she pioneered brought huge wealth to the national treasury, and her reputation reached its peak. After the prince ascended the throne, he made her the queen despite all the opposition. In the end, the emperor and the empress joined hands, one in charge of the court and the other in charge of the treasury, and together they created a legend of prosperity.