It can be analyzed from the following aspects that Zhu Di is Zhu Yuanzhang's biological son
Zhu Di was born on the second day of the first month of May in the 20th year of the late Yuan Dynasty (1360 AD), born in Yingtianfu (present-day Nanjing), and was the fourth son of Zhu Yuanzhang. In 1361, Zhu Yuanzhang personally led an army to fight, and destroyed Chen Youyu's water army in Anqing, and drove straight into Jiangzhou, where Chen Youyu was repeatedly defeated.
Zhu Di
Therefore, from the time, it can be seen that Zhu Di is Zhu Yuanzhang's biological son.
Zhu Di's mother, Empress Ma (Empress Ma), had known Zhu Yuanzhang as early as 1352 before Chen Youyi led his army to the east (1360 AD), and was personally promised to Zhu Yuanzhang by Ma's adoptive father Guo Zixing. In 1352 (to the twelfth year of Zheng), Guo Zixing raised an army in Dingyuan (Dingyuan, Anhui) in response.
Zhu Zhongba (Zhu Yuanzhang) and Ma Shi
Guo Zixing raised an army to revolt and became the leader of the White Lotus Sect at that time, and on February 27 of the same year, after leading the rebel army to capture Haozhou, Guo Zixing called himself Marshal Guo. Haozhou Zhong left zhu Yuanzhang to join Guo Zixing's rebel army, Zhu Yuanzhang joined the army after shrewd and capable, handled things properly, was a pioneer in the war, and all the booty obtained was handed over to Marshal Guo Zixing, and was appreciated by Marshal Guo! He also gave him a reward for his deeds, and said that the merit belonged to everyone, so he distributed the reward to everyone.
Marshal Guo Zixing
Soon after, Zhu Yuanzhang's good reputation in the army spread. Guo Zixing also regarded him as his confidant, and always discussed important matters with Zhu Yuanzhang. Guo Zixing saw that Zhu Yuanzhang was a talent and felt that it would be of great help to his career. Therefore, he betrothed his adopted daughter Ma Shixu to Zhu Yuanzhang. After Ma Shi became intimate with Zhu Yuanzhang, he had a deep affection for Zhu Yuanzhang, followed Zhu Yuanzhang in his southern expedition to the north, and carefully assisted Zhu Yuanzhang.
Zhu Di's mother, Empress Xiaocigao, married Zhu Yuanzhang, then a general of the Red Turban Army, in 1352 (zhizheng 12th year).
Zhu Yuanzhang and Empress Ma
After marriage, he had a deep affection with Zhu Yuanzhang. He has always been by her husband's side and followed him from place to place. For Zhu Yuanzhang, Ma Shi is not only a virtuous assistant, helping him manage everything in the family, but also a good assistant to him. With the old Zhu Nan's conquest of the Northern War, the establishment of daming foundation laid the foundation for Daming! Her virtuous virtue has been recognized by the whole country, loved by the people, and also loved by her husband, becoming Zhu Yuanzhang's favorite wife.
Therefore, it can be seen from the above points that Zhu Di is the biological son of Zhu Yuanzhang.