Li Yunrui and the Second Prince were in a cooperative relationship. There were three reasons why Li Yunrui chose to cooperate with the Second Prince. First, the Second Prince was resourceful and more suitable to inherit the Qing Emperor's position than the Crown Prince. Second, Li Yunrui wanted to prove that she was more powerful than Ye Qingmei and hoped to support the Second Prince, who was similar to the Qing Emperor. Third, she hoped that the Qing Emperor could see her existence, so she chose to cooperate with the Second Prince to show the Qing Emperor her ability. As for their specific ending, according to the search results, they committed suicide after failing to rebel together.

Li Yunrui was a character in the novel " Joy of Life " and its derivative works. She was the Eldest Princess of the Qing Kingdom, the Emperor's sister, Lin Wan 'er's mother, not the Crown Prince's mother.
There was no specific information about Li Yunrui and the Crown Prince in Joy of Life. However, it could be known that there was a forbidden love between them. The Crown Prince was infatuated with Li Yunrui, and Li Yunrui supported the Crown Prince at first, but later turned to support the Second Prince. There was no information about how the affair between them was discovered or the specific chapters. Therefore, there was no clear information for reference.
There was no specific information about Li Yunrui and the Crown Prince in Joy of Life. However, it could be known that there was a forbidden love between them. The Crown Prince was infatuated with Li Yunrui, and Li Yunrui supported the Crown Prince at first, but later turned to support the Second Prince. There was no explicit mention of how their affair was discovered. Therefore, there was no clear information for reference.
In Joy of Life, Li Yunrui and the Crown Prince committed suicide. In the novel, the Crown Prince was discovered by the Qing Emperor because of his affair with Li Yunrui. The Qing Emperor deposed the Crown Prince and exiled Li Yunrui. Later, Li Yunrui, the Crown Prince, and the Second Prince plotted to assassinate the Qing Emperor, but the plan failed. In the end, the two chose to commit suicide. Therefore, their ending was a failure and tragedy.
The relationship between Li Yunrui and the Crown Prince in Joy of Life was complicated and confusing. The Crown Prince had an infatuated love for Li Yunrui, and Li Yunrui chose to have an indecent relationship with the Crown Prince to take revenge on the Qing Emperor and seize power. However, there was no mention of how the relationship was discovered. Therefore, the details of their relationship would require further reading of the original work or other relevant materials to obtain more information.
In the original " Joy of Life," Li Yunrui and the Crown Prince were related by blood. They were nominally aunt and nephew. However, in reality, they were not very closely related by blood. The Crown Prince had feelings for Li Yunrui, and Li Yunrui also used the Crown Prince to control power. The relationship between them had both benefits and emotional entanglements. He did not mention anything about what happened between them.
In Joy of Life, Li Yunrui was the eldest princess, not the crown prince. Li Yunrui was the mother of the female lead, Lin Wan 'er. She was the Emperor's younger sister and was deeply trusted by the Emperor. She had always coveted the throne and tried to make her son the Crown Prince. For this reason, she did not hesitate to collude with other forces and even planned a plot to assassinate the Emperor. In the novel, Li Yunrui's ambitions and methods were vividly revealed. Her actions also aroused the vigilance and opposition of other characters. In the end, Li Yunrui's conspiracy was exposed and she was also given the death penalty.
In the original work of Joy of Life, Li Yunrui was the Qing Emperor's lover and also the Eldest Princess. She had an affair with the Crown Prince.
The relationship between Li Yunrui and the Crown Prince in the original story of Joy of Life was complicated and confusing. The Crown Prince had an infatuated love for Li Yunrui, and Li Yunrui chose to have an indecent relationship with the Crown Prince to take revenge on the Qing Emperor and seize power. The relationship between them was both beneficial and kinship. The development and revelation of the specific relationship were not mentioned.
The relationship between the Crown Prince and Li Yunrui was complicated and confusing in the original work of Joy of Life. The Crown Prince had an infatuated love for Li Yunrui, and Li Yunrui chose to have an indecent relationship with the Crown Prince to take revenge on the Qing Emperor and seize power. The Crown Prince had always harbored improper thoughts about his aunt, but due to his status and Li Yunrui's attitude, the Crown Prince had never dared to show it. However, the details and development of the specific relationship were not mentioned in the search results provided.
In the original work of Joy of Life, there was a complicated and confusing relationship between Li Yunrui and the Crown Prince. The Crown Prince had an infatuated love for Li Yunrui, and Li Yunrui chose to have an indecent relationship with the Crown Prince to take revenge on the Qing Emperor and seize power. The Crown Prince had always harbored improper thoughts about his aunt, but due to his status and Li Yunrui's attitude, the Crown Prince had never dared to show it. Therefore, he chose to find a substitute for Li Yunrui to ease his longing for his aunt. However, there was no mention of how the relationship was discovered.