the marquis eldest son's lascivious story

It very well could be. Without proper evidence, any story of this nature is likely a rumor. People often spread unfounded tales for various reasons.

I'm sorry, but I don't have any information regarding such a lascivious story. It's not appropriate to spread unsubstantiated immoral tales.

"The Eldest Daughter of the Marquis's Residence" was an ancient romance novel written by Ye Zixiao. This novel told the story of the protagonist, Ji Mingxin, who transmigrated to the Marquis's Mansion and became the eldest daughter of the Di family. She had displayed her medical skills, martial arts, and business talents in the marquis 'manor, and was bestowed with a marriage to a silkpants heir with a bad reputation. Ji Mingxin decided to marry him because he was rich, powerful, and good-looking. The novel was available on some websites for free reading, but the details of the free chapters and full-text reading required further inquiry.

The eldest son was not exactly the same as the legitimate eldest son. The eldest son referred to the first son of the male owner and concubine, also known as the Shu eldest son. The eldest son referred to the first son of the male owner and his wife. Although the eldest son was also the eldest son, the eldest son was not necessarily the eldest son. The eldest son enjoyed a higher status and priority in the family inheritance, and the eldest son was the first child of the male master. It could be the eldest son of the legitimate son or the eldest son of the concubine. Therefore, there were some differences between the eldest son and the legitimate eldest son in ancient society.

The difference between a legitimate eldest son and an illegitimate eldest son lay in their concept, status, and order of inheritance. The eldest son was the first son born to his wife, while the eldest son was the oldest son born to a concubine. In terms of status, the status of the eldest son was much higher than that of the eldest son. Regardless of whether he was the eldest son or not, as long as he was a legitimate son, his status would be higher than that of a concubine. In terms of the order of inheritance, the ancient system implemented the eldest son inheritance system. The legitimate son inherited the family's status and property before the illegitimate son. If there was no eldest son in the family, or if the eldest son died and had no descendants, then the eldest son could inherit. In short, there were obvious differences in status and inheritance rights between the eldest son and the eldest son.

Fan Jian's eldest son had been replaced by Fan Jian. In reality, it was Ye Qingmei and the Qing Emperor's son, Fan Xian. In order to protect Ye Qingmei's child, Fan Jian had his own son die in Fan Xian's place.

Di Renjie's eldest son was called Di Guangsi. He was the most outstanding son of Di Renjie who was the most like Di Renjie. Di Guangsi served his parents very filial piety, humble, upright and unyielding, talented and outstanding, with his father Di Renjie's demeanor. He had served as governor of Zi, Xu and Bei, and was the general of the hussars. Di Guangsi performed well during his tenure and was praised and reused by Wu Zetian. Wu Zetian even praised Di Renjie and said,"You can be compared with Qi Xi, who doesn't avoid relatives." Di Guangsi's younger brother, Di Guangyuan, was also Di Renjie's son. He had once saved Di Renjie's life. There was no mention of Di Renjie's third son.

Fan Jian's eldest son was Fan Xian.

Fan Xian's eldest son was Fan Sizhe.

Li Chengqian was the eldest son of Emperor Taizong of the Tang Dynasty, Li Shimin. He was made the crown prince when he was young and was loved and valued by his father. According to historical records, Li Chengqian was described as intelligent, kind, filial, and outstanding in appearance. He was deeply loved by Li Shimin. His education was also highly valued. Li Shimin hired a first-class Confucian master and an important minister to guide his studies. However, Li Chengqian chose to rebel after he became an adult and attempted to seize the world. As for why he made such a choice, there was no clear explanation in the historical records. Therefore, there was no definite answer as to the specific situation of Li Chengqian's eldest son and why he chose to rebel.