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The Great Wall is a wonder that the ancient Chinese laboring people created. At that time, there were no machines. All the work depended on manpower. Those millions of people worked among the continuous mountains and steep cliffs. They worked facing dangers and many of them lost their lives.
According to historical data, the labor force was made up of three groups: soldiers, common people and criminals. Since the Qin Dynasty (221BC - 206BC), the construction of the Great Wall had been a very large project. The Emperor Qin Shihuang ordered millions of people to finish this project.
Soldiers made up the main construction group. This was the case with the building of the wall of Northern Qi (550-557). Also, during the Qin Dynasty, 300,000 soldiers were redirected to build the wall after General Meng Tian conquered the Huns. Still, it took nine years to finish the work. In order to take care of the soldiers and make them feel settled, the court even arranged for widows to marry them.
Millions of common people were called up to build the wall. Northern Qi's wall, starting from Xiakou to Hengzhou, used 1,800,000 laborers. A section of Sui's (581 - 618) wall in Inner Mongolia required more than 1,000,000 men to build. Besides the first 300,000 soldiers, Qin's wall required another 500,000 common people to complete the work.
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