What are the three major tribes of Qin?

The "Meng, Xibai" tribes. The "Mengxi Bai" are the three famous generals who made Duke Mu of Qin's reign successful: Meng Mingxi, Xikiju, and Bai Yibing. After Duke Mu of Qin, the descendants of these three clans always lived next to each other, and after more than two hundred years, they gradually occupied half of ancient China. The three clans were all hard-working and good at war, and had always been the home of the nobles and the knights of the Qin state. After Shang Yang changed the law, abolishing the subordinate farms and well fields, all the people of the country became "nationals", and the privileges of the Meng, Xibai and Bai clans as knights and the priority of merits disappeared, so they became the old Qin people who cultivated and fought on an equal footing with the nationals. At this time, the Meng clan and the West Beggar clan were not good at farming and gradually declined, while the Bai clan was good at farming and war, and gradually became the largest clan in ancient China.