The Qing Emperor had told him through Zhan Doudou. The Qing Emperor's original words were " the little Emperor's child is yours." Thus, the Qing Emperor believed that the red bean rice was born of Si Lili and Fan Xian.

In the novel Joy of Life, the Qing Emperor finally learned that Red Bean Rice was his daughter. At first, Fan Xian had mistakenly thought that Red Bean Rice was Si Lili's daughter. It was not until a long time later that he learned her true identity. Red Bean Rice was the daughter of the Northern Qi empress Zhan Doudou and Fan Xian. She was raised by Zhan Doudou and Si Lili. The Qing Emperor had finally seen red bean rice in the original novel, so he knew of her existence.
In the novel Joy of Life, the Qing Emperor Fan Xian did not know the true identity of Red Bean Rice at first. He mistakenly thought she was Si Lili's daughter. It was not until a long time later that Fan Xian learned that Red Bean Rice was the daughter of the Northern Qi empress, Zhan Doudou, and him. Thus, Fan Xian finally saw Red Bean Rice in the original novel and knew that she was his daughter.
In the novel Joy of Life, the Qing Emperor finally learned that Red Bean Rice was his daughter. At first, Fan Xian had mistakenly thought that Red Bean Rice was Si Lili's daughter. It was not until a long time later that he learned her true identity. Red Bean Rice was the daughter of the Northern Qi empress Zhan Doudou and Fan Xian. She was raised by Zhan Doudou and Si Lili. He did not mention how the Qing Emperor knew the identity of the red bean rice.
In the novel Joy of Life, the Qing Emperor finally learned that Red Bean Rice was his daughter. At first, Fan Xian had mistakenly thought that Red Bean Rice was Si Lili's daughter. It was not until a long time later that he learned her true identity. Red Bean Rice was the daughter of the Northern Qi empress Zhan Doudou and Fan Xian. She was raised by Zhan Doudou and Si Lili. The Qing Emperor had told him through Zhan Doudou. The Qing Emperor's original words were " the little Emperor's child is yours." Thus, the Qing Emperor believed that the red bean rice was born of Si Lili and Fan Xian.
In the novel " Joy of Life," Fan Xian initially did not know Red Bean Rice's true identity and mistakenly thought she was Si Lili's daughter. It was not until a long time later that Fan Xian learned that Red Bean Rice was the daughter of the Northern Qi empress, Zhan Doudou, and him. Thus, Fan Xian finally saw Red Bean Rice in the original novel and knew that she was his daughter.
In the search results provided, there was no clear mention of how the Qing Emperor knew about the red bean rice. Therefore, I don't know how the Qing Emperor knew about red bean rice.
In the novel " Joy of Life," Fan Xian only found out that Red Bean Rice was his daughter a long time later. Red Bean Rice was the daughter of the Northern Qi empress Zhan Doudou and Fan Xian. She was raised by Zhan Doudou and Si Lili. Fan Xian had mistakenly thought that Red Bean Rice was Si Lili's daughter. It was not until a long time later that he learned the truth. In the end, Red Bean Rice became the empress of Northern Qi and ruled for a full 50 years, making Qi more and more prosperous.
In the novel " Joy of Life," Fan Xian only found out that Red Bean Rice was his daughter a long time later. Red Bean Rice was the daughter of the Northern Qi empress Zhan Doudou and Fan Xian. She was raised by Zhan Doudou and Si Lili. At first, Fan Xian had mistakenly thought that Red Bean Rice was the daughter of Si Lili. It was not until a long time later that he found out her true identity. In the movie, Red Bean Rice displayed extraordinary wisdom and courage, and eventually became the empress of Northern Qi, ruling the entire mainland. As for the details of the ending and fate of the red bean rice, the search results did not provide a clear answer.
Red Bean Rice was the daughter of the Northern Qi empress Zhan Doudou and Fan Xian in Joy of Life. At first, Fan Xian had mistakenly thought that Red Bean Rice was the daughter of Si Lili. It was not until a long time later that he found out her true identity. In the movie, Red Bean Rice displayed extraordinary wisdom and courage, and eventually became the empress of Northern Qi, ruling the entire mainland. The search results did not provide a clear answer to the specific fate and story development of the red bean rice. Therefore, I am unable to give a definite answer to the question regarding the red bean rice.
Fan Xian and Zhan Doudou's daughter, Red Bean Rice, would eventually become the empress of Northern Qi. At first, Fan Xian had mistakenly thought that Red Bean Rice was the daughter of Si Lili. It was not until a long time later that he found out her true identity. Red Bean Rice was raised by Zhan Doudou and Si Lili. However, the specific fate and ending of the red bean rice were not detailed in the search results provided.