What is the relationship between Dong Ge and Huang Taiji?

In the TV series, Busia Mara is the cousin of Huang Taiji. Since childhood, Dong Ge likes this younger brother very much, and he also defends this younger brother very much, so even though we haven't seen each other for many years, there is a deep affection between them.

In fact, although they are cousins in history, they have little contact. In history, there are only many entanglements between Dongge and Nurhachi, which have nothing to do with other princes.

Extended data

Ye He Na La grew up to be a peerless beauty, attracting countless heroes to compete for beauty. She is known as "the first beauty of Jurchen", and her beauty is famous all over Jurchen. Her life is destined to become a political weight because of the identity of Princess Yeheb.

Brother Dong was promised to different men several times, but he didn't succeed. In forty-three years of Wanli in Ming Dynasty, she married Munger Gourdet, the eldest son of Mongolian Berbagadar Khan, but died a year later.