Li Chengqian's grandson, Empress Sun, and the eagle have grown up.

The answer to Li Chengqian's question was not found in the search results provided.

The answer to Li Chengqian's question was not found in the search results provided.

According to the search results provided, there was no definite answer about Li Chengqian's eldest grandson, Empress Eagle, growing up. The search results included a list of novels and chapters related to Li Chengqian, but did not provide any information about his specific situation or story. Therefore, he could not answer this question.

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Li Chengqian's grandson was Li Shizhi.

Li Chengqian's grandson was Li Shizhi.

Li Chengqian's grandson, Li Shizhi, became the prime minister of the Tang Dynasty. Li Shizhi was the third son of Li Chengqian's son, Li Xiang. He had always kept a low profile in the Li Tang imperial clan and was lucky enough to escape Wu Zetian's massacre of the Li Tang imperial clan. After Emperor Zhongzong of Tang, Li Xian, ascended the throne, in order to consolidate the status of the royal family, he began to put the people in the Li Tang royal family in important positions. As Li Chengqian's descendants had already withered, Li Shizhi was put in an important position by the court and served as prime minister during the reign of Emperor Xuanzong of the Tang Dynasty.

Empress Zhangsun gave birth to three sons, namely Li Chengqian, Li Tai, and Tang Gaozong Li Zhi. Li Chengqian was the eldest son of Empress Zhangsun and Li Shimin. He was made the Crown Prince, but he was demoted to a commoner because of his rebellion. He finally died two years after being demoted. Li Tai was Li Shimin's fourth son. He was ordered to participate in the compilation of literature because he liked literature. He died at the age of 35. Li Zhi was Li Shimin's ninth son, who later became Emperor Gaozong of the Tang Dynasty. He died at the age of fifty-five. Empress Zhangsun also gave birth to four daughters, namely Princess Changle Li Lizhi, Princess Chengyang, Princess Jinyang Li Mingda, and Princess Xincheng. Empress Zhangsun had an important influence on Li Shimin's imperial career, especially after he became the emperor. She helped Li Shimin create the Zhenguan Rule. Li Chengqian became absurd after Empress Zhangsun's death. He indulged his desires and even rebelled. He was eventually deposed.

Li Shimin and Empress Zhangsun were childhood sweethearts and had known each other since childhood. Their love story was filled with sweetness and purity. Empress Zhangsun was Li Shimin's first love and Bai Yueguang. The two of them respected each other as if they were guests and had always been the same. Although Li Shimin had many concubines, Empress Zhangsun was never jealous of him. Instead, she had always been considerate of her husband. Their love story was full of romance and determination. They had experienced many difficulties and setbacks together, but they had always supported each other and passed through many difficult times together. Empress Zhangsun was Li Shimin's most cherished person. Their love story was touching and yearning.

Empress Zhangsun was the empress of Emperor Taizong of the Tang Dynasty, Li Shimin, and also Li Chengqian's mother. She was the daughter of the Sui Dynasty's General Zhangsun Sheng and the younger sister of the Tang Dynasty's Prime Minister Zhangsun Wuji. Empress Zhangsun was chased out of the house after her father's death and was later adopted by her uncle. Uncle loved her very much and hoped that she would marry a good husband. Therefore, after Empress Zhangsun's father's funeral, her uncle betrothed her to Li Shimin. After Empress Zhangsun married Li Shimin, she had been well-behaved and helped Li Shimin achieve many things. After Li Shimin ascended the throne, he conferred Empress Zhangsun the title of Empress and treated her with great respect and love. Empress Zhangsun had strict requirements for Crown Prince Li Chengqian, hoping that he could establish virtue and spread a good reputation. As the crown prince, Li Chengqian was the center of attention, but he became absurd after he became an adult. He liked sensual pleasures and lived a luxurious life. In the end, Li Chengqian was deposed as a commoner for plotting a rebellion and was exiled to Qianzhou, where he died two years later.