Qin Ye's eldest son in Joy of Life was Qin Heng.

In Joy of Life, Qin Ye's eldest son was Qin Heng.
Joy of Life Qin Ye was played by Feng Enhe.
In the second season of the celebration, Qin Ye was played by Feng Enhe.
Yes, Qin Zhong was Qin Ye's biological son. In 'Dream of the Red Chamber', Qin Ye was Qin Zhong's father, and Qin Keqing was Qin Ye's adopted daughter from the Health House. Qin Zhong was Qin Ye's son in his later years. He belonged to the Qin family's bloodline.
Yes, Qin Zhong was Qin Ye's biological son. In 'Dream of the Red Chamber', Qin Ye was Qin Zhong's father, and Qin Keqing was Qin Ye's adopted daughter from the Health House. Qin Zhong was Qin Ye's son in his later years. He belonged to the Qin family's bloodline.
Transdimensional into the First Son of Qin Shihuang was a novel written by the author, Zhao Lang. The story was about the protagonist Zhao Lang, who traveled to the Qin Dynasty and became the eldest son of Emperor Qin Shi Huang. He faced all kinds of challenges and adventures. However, the specific plot and story development needed to be read in full. We have no way of knowing the details and comments of the novel.
The author of this novel was Zhao Lang. The story was about the protagonist, Zhao Lang, who traveled to the Qin Dynasty and became the eldest son of Qin Shihuang. He used his knowledge and family background to plan a rebellion after Qin Shihuang's death to fight for the world. The novel was serialised on many websites, and readers could read it online for free.
The author of this novel was Zhao Lang. The story was about the protagonist, Zhao Lang, who traveled to the Qin Dynasty and became the eldest son of Qin Shihuang. He used his knowledge and family background to plan a rebellion after Qin Shihuang's death to fight for the world. The novel was serialised on many websites, and readers could read it online for free. The specific plot and chapter content can be found on the relevant website.