《新唐书·列传·卷一百四十五》
辽东城降众有一万四千人，该收为奴婢，先集中在幽州，准备分赏给战士。
辽降口万四千，当没为奴婢，前集幽州，将分赏士。
There were 14,000 people who had surrendered from Liaodong Fortress. They were to be enslaved and were temporarily housed in Youzhou, ready to be distributed among the soldiers.