I have a classmate. Her surname is Ran, from Anshan, Liaoning. She is a descendant of Manchu with yellow flags. What was her last name?

Perhaps the ancestors were the Eight Banners Han Army, whose original name was Ran, and entered the Eight Banners and Manchuria in the late Ming Dynasty. It was later incorporated into Manchuria.

Another possibility is the Eight Banners Koryo, that is, a Korean whose real name was Ran who defected when Huang Taiji recruited North Korea, and later became Manchu.

The key is to go back to my hometown to check my family tree.