I don't know.
Joy of Life Prince Li Chengqian and Yu Wuyuan's encounter did not find any relevant information in the search results provided. Therefore, I don't know the plot development between Li Chengqian and Yu Wuyuan.
In Joy of Life, the Crown Prince was the son of the Qing Emperor, and the Second Prince was the son of the Qing Emperor and Noble Consort Shu. The Crown Prince and the Second Prince were fighting for the throne. However, the search results did not provide a clear answer as to who would eventually get the throne. Therefore, it was impossible to determine the ending of the Crown Prince and the Second Prince in Joy of Life.
In Joy of Life, the last person to become the Crown Prince was the Qing Emperor's Third Prince. Fan Xian chose to live in seclusion and did not become the Crown Prince. The Qing Emperor's Third Prince inherited the position of Crown Prince.
In the novels of Qing Yu Nian, the crown prince's ending was suicide. After the Qing Emperor learned of the relationship between the Crown Prince and the Eldest Princess, he abolished the Crown Prince's position and placed the Eldest Princess under house arrest. After the Eldest Princess failed in her attempt to assassinate the Qing Emperor, the Crown Prince and Eldest Princess chose to commit suicide. There was a relationship between them that transcended ethics.
In Joy of Life, the Prince's ending was suicide. After the Qing Emperor learned of the relationship between the Crown Prince and the Eldest Princess, he abolished the Crown Prince's position and placed the Eldest Princess under house arrest. After the Eldest Princess failed in her attempt to assassinate the Qing Emperor, the Crown Prince and Eldest Princess chose to commit suicide. They had originally wanted to bring down the Qing Emperor, but they had failed in the end.
In Joy of Life, the Prince's ending was suicide. After the Qing Emperor learned of the relationship between the Crown Prince and the Eldest Princess, he abolished the Crown Prince's position and placed the Eldest Princess under house arrest. After the Eldest Princess failed in her attempt to assassinate the Qing Emperor, the Crown Prince and Eldest Princess chose to commit suicide. There was a relationship between them that transcended ethics.
In Joy of Life, the Crown Prince and the Second Prince did conspire against each other. The Crown Prince was deposed of his position due to his affair with the Eldest Princess. He and the Eldest Princess launched a rebellion together, and in the end, they failed and committed suicide. The Second Prince chose to assassinate the Emperor, but after the plan failed, he committed suicide by taking poison. Therefore, they did not succeed in becoming emperors.
In Joy of Life, the Second Prince and the Crown Prince had indeed rebelled together. The Crown Prince was deposed of his position due to his affair with the Eldest Princess. He and the Eldest Princess launched a rebellion together, and in the end, they failed and committed suicide. The Second Prince chose to assassinate the Emperor, but after the plan failed, he committed suicide by taking poison. Therefore, they did not succeed in becoming emperors.
In " Joy of Life," the Crown Prince liked the Eldest Princess, Li Yunrui. She was the Eldest Princess of the Qing Kingdom. She was beautiful and could topple a country. She had extremely high authority. The Crown Prince had always harbored improper thoughts about her, but due to the obstacles in his identity and Li Yunrui's attitude, the Crown Prince had never revealed it.
In Joy of Life, the relationship between the Eldest Princess and the Crown Prince was that of an aunt and nephew. The Crown Prince was the Crown Prince, the heir to the throne, and the Eldest Princess was the Princess Consort's sister, the Crown Prince's aunt. They had relied on each other since they were young, valued each other, and established a deep relationship. However, their private affair was eventually exposed by Fan Xian. When the Qing Emperor learned of it, he was furious. The Eldest Princess was placed under house arrest and the Crown Prince was sent to Nanzhao. After the Eldest Princess learned that the Qing Emperor wanted to abolish the Crown Prince, she secretly joined forces with the Qin family and the Ye family to kill the Qing Emperor and push the Crown Prince to the throne. However, the Eldest Princess 'plan was leaked from the beginning. After the Eldest Princess' rebellion failed, she and the Crown Prince chose to commit suicide.