As-Saffāh's four-year reign was marked with efforts to consolidate and rebuild the caliphate. His supporters were represented in the new government, but apart from his policy toward the Umayyad family, as-Saffāh is widely viewed by historians as having been a mild victor. Jews, Nestorian Christians, and Persians were well represented in his government and in succeeding Abbasid administrations. Education was also encouraged, and the first paper mills, staffed by skilled Chinese prisoners captured at the Battle of Talas, were set up in Samarkand.