What does "Old Qin" mean in Daqin Empire?

The tribe of Qin people is relatively old, and it is a tribe that raises horses for Zhou Tianzi. In 77 1 year BC, the Zhou dynasty was forced to move its capital by foreign pressure, and the Qin people sent troops to escort it. In order to express his gratitude, Zhou Tianzi made Qin people princes. According to legend, the ancestors of the Qin people helped Dayu control water and gave him a black flag and a winning surname. Dayu praised Win for his outstanding achievements. As for calling ourselves old Qin people, it is to show the long history of our tribe, to enhance national pride, and to gather national strength against the six countries, just as we now call ourselves descendants of the Yellow Emperor.