They are twins who look alike, but have been separated for twenty-five years because of family conspiracy.
Yang Muchu, the adopted son of the Rong family, is actually the eldest son of Yang's enterprise. He was brought into the Rong family by his biological sister and grew up since he was a child.
Yang Muchi, the adjutant of the military command and the second young master of the Yang family. Yang Muchu's twin brother.