What is the ending of Palace?

The final answer is: Lao's mother, Zheng Hui Palace, was also the crown princess at that time. Because the Crown Prince at that time could not have children, in order to ensure that the Crown Prince could become an emperor in the future, she hooked up with the Prince who lived outside the palace at that time, that is, the current emperor, and wrote a love letter (in episode 10, the emperor was engrossed in watching his photo with Zheng Hui Palace, and the queen came in ...), and she got her wish.

Who knows, the crown prince was killed in a car accident at that time, and the crown princess was forced to leave the palace after being named Zheng Hui Palace, while the prince who lived outside the palace, now the emperor, naturally entered the palace and was named the new crown prince and became the new emperor after the death of the old emperor.

The current emperor went out of the palace for illness, so he found a love letter from Zheng Hui Palace hidden in the drawer of the emperor's desk, and told Caijing that he would automatically give up the throne of the emperor and go out of the palace to be a photographer. The love letter from Zheng Hui Palace to the Emperor found in the letter has no intention of involving foreign countries. ...

So a wave of unrest started again. The journalist who had always had an unusual friendship with the then Crown Prince who died in a car accident never left any effort to help the then Crown Prince who died in a car accident, so that Zheng Hui Palace returned to the palace to regain power. After the reporter learned about the love letter, he felt cheated, which led to the letter being threatened by the reporter. ...

When the love letter broke out, the emperor decided to abolish the post of Crown Prince of Letters and change it to Crown Prince. Zheng Hui Palace wants the Emperor to abdicate automatically on the grounds of his health. In desperation, Caijing found the Queen Mother and told a secret. It turned out that the secret was hidden in the bear that the old emperor gave a letter to. Because the bear broke a hole, it was discovered when Caijing helped sew it. Empress Dowager finally knew why the old emperor didn't chase the Crown Prince for his son at that time, and drove Hui Zhenggong and his mother out of the court and ordered them to live abroad. Empress Dowager finally decided to expel Hui Zhenggong from the palace again, but the letter said that she was not interested in the throne of the emperor and left the palace. Empress Dowager Tai only let Luo inherit the throne, but Hui Zhenggong still failed to return to the court. ...

Finally, Lao's proposal was rejected by Caijing. Cai Jing said that she would always be with the letter. When Lao was sad, she told the Empress Dowager that she would leave the palace with her mother, Zheng Hui Palace, to live abroad. In a dilemma, Caijing got back her letter ... A year later, their little prince was born.