The First Emperor mobilized massive conscripted labor forces, including convicts and prisoners, by some accounts up to a million strong, to conduct this building campaign.

• 为了加强统治，防止北方游牧民族的侵扰，秦王朝投入了巨大的人力物力来修筑长城，所以说它是中国古代劳动人民血汗的结晶。