There was no clear record of Li Jinglong's cause of death. Some documents believe that he died in the fourth year of Ming Xuande (1429), while others record that he died in the last years of Yongle. Li Jinglong's descendants were conferred the title of Marquis of Linhuai during the Qing Dynasty and had been officials for generations. However, the search results did not provide any conclusive information about his specific cause of death and outcome. Therefore, it was impossible to accurately answer the cause of Li Jinglong's death.

Li Jinglong's ending was not ideal. After Zhu Di entered the city, Li Jinglong was placed under house arrest and stripped of his title and property. He could not leave his home for the rest of his life until he died of depression at the end of Yongle. Therefore, it could be said that Li Jinglong did not have a good ending.
Li Jinglong was the son of Li Wenzhong, the founding general of the Ming Dynasty. Li Wenzhong was Zhu Yuanzhang's nephew and was ranked third on the list of meritorious officials. Therefore, Li Jinglong was Zhu Di's nephew, and Zhu Di was Li Jinglong's uncle. Their relationship could be called uncle and nephew.
Li Jinglong's performance in the war was not outstanding. He had been defeated many times and was even more arrogant and ignorant than Zhao Kuo. Although he was the son of a general, he did not understand military affairs. He did not know how to lead troops, nor did he know how to fight. However, his background and family background made him important. His father was Li Wenzhong, the general of the early Ming Dynasty, his mother was Zhu Yuanzhang's sister, and he himself was Zhu Yuanzhang's nephew. Li Jinglong inherited his father's title and was put in an important position during Zhu Yunwen's time. However, he did not perform well in the war with Zhu Di and eventually retreated and surrendered. Therefore, according to the information provided, Li Jinglong did not perform well in the war.
Li Jinglong's father was the founding general of the Ming Dynasty, Li Wenzhong.
Li Jinglong's son was Li Jingtai. Li Jingtai was Li Jinglong's eldest son. He became an important general in the Ming Dynasty. As for whether Li Jinglong had other sons, the search results did not mention any relevant information, so it was impossible to confirm.
Li Jinglong's descendant was Li Zongcheng. Li Zongcheng was Li Jinglong's great-grandson. He had inherited Li Wenzhong's family background and served as the commander of the Nanjing Jinyiwei during the Ming Dynasty. When Li Zongcheng was invaded by the Japanese pirates, the Ming Dynasty sent troops to support him. After several battles, the two sides decided to reconcile. The records of Li Jinglong's son and other descendants were not detailed. They only knew that Li Jinglong's great-grandson, Li Xuan, was appointed by the imperial court as the commander of the Nanjing Brocade Guard.
There were many reasons why Li Jinglong was known as the " strongest prodigal." First of all, he was born in a prestigious family. His grandfather and father were founding heroes, especially his father, Li Wenzhong. Li Jinglong had received a good education since he was a child. Zhu Yuanzhang also valued him very much. He was still training troops in many places. He performed well in the tea horse trade and was entrusted with important tasks, such as serving as the general of the Krupp Breaking Army. These were all the team that Zhu Yuanzhang had arranged for Zhu Yunwen. However, his performance in the Battle of Jingnan was extremely terrible. During the Battle of Jingnan, Zhu Yunwen trusted him greatly and assigned him 500,000 elite soldiers. However, he had been defeated repeatedly on the battlefield. He had even handed over more than a million stones of grain stored in the strategic town of Dezhou to the Yan army, causing the imperial court's army to wipe out millions of people. Not only did this consume a large amount of Jianwen Emperor's military power, but it also dealt a serious blow to the morale of the court. In the end, when the Yan army was approaching Nanjing, he and the King of the Valley, Zhu Wei, opened the city gate to welcome the surrender, which directly led to the fall of Nanjing and the death of the Jianwen court. His performance had completely betrayed Emperor Jianwen's trust, causing all the resources and advantages he had accumulated to go to waste. Therefore, he was called the " strongest prodigal."
In the end, Li Jinglong surrendered to Zhu Di and was awarded the title of meritorious minister in the Battle of Jingnan. During the Battle of Jingnan, he opened the gates of Nanjing to welcome Zhu Di into the city, which led to the fall of the Jianwen court. Zhu Di eventually won the throne, while Li Jinglong was granted an official position and title, enjoying special treatment. However, Zhu Di only used Li Jinglong's remaining value. When his value was squeezed dry, he abandoned him. Li Jinglong's ending showed that he was just a tool in Zhu Di's eyes.
Li Jinglong was a general during the Ming Dynasty. He led 500,000 troops to the north during the Battle of Jingnan, but he was defeated by Zhu Di in the end. Under Zhu Di's pincer attack from both inside and outside, Li Jinglong's army was defeated without attacking. In the end, he could only save his life and surrender to Zhu Di. Li Jinglong's failure might be related to his lack of adequate military strategy and lack of understanding of the importance of military logistics. Zhu Di was considered a famous general who had been baptized by many great battles. There was no clear information on whether Li Jinglong was Zhu Di's spy or spy.