Is everything in Duke of Zhou true?

In fact, Duke Zhou in Duke Zhou is a real figure in history. His surnames are Ji Mingdan and Ji Dan, also known as Zhou Gongdan. He is Zhou Chengwang Song Ji's uncle, the fourth son of Zhou Wenwang Jichang and the younger brother of Zhou Wuwang Ji Fa.

Let's be clear: Duke Zhou is a descendant of Ji, whose name is Ji Chang, his father, his brother and nephew. His father Ji Chang succeeded to the throne by his brother Ji Fa, and his nephew Song Ji succeeded to the throne after his brother died. His father and brother are historical archetypes of Ji Chang and Ji Fa in The Romance of Gods.

Ji Dan, a royal aristocrat, made great contributions to the establishment and governance of the Zhou Dynasty. His father laid the foundation for the future Zhou Dynasty, and his brother destroyed Shang Zhouwang and established the Zhou Dynasty. He is the younger brother of the ruler of the Zhou Dynasty, so others call him Duke Zhou.