the industrial strength of china beyondmoved to the west, the mountains. beyond the railroad lines.on. say from and of the attack -- safe from enemy attack, they might produce the guns they needed. they might trade space for time. blowup the roads. space for time. scorch the earth. space for time. blowup the factory building. the invaders.for then the people rose and moved. writing, walking, crawling. ♪ announcer: 30 million of them, spontaneously driven by an epic impulse rose and made their way west. moving westward on a track that stretched for 2000 miles of wilderness. the world witnessed one of the most amazing spectacles in human history. everreatest mass migration recorded. whatever could be of use and moved, the chinese took with them on a homeric journey. schools, hospitals, dismantled and carried away. from over 1000 factories weighing over 300 million pounds was moved away and trucks and foxconn's and on their backs. carts and on their backs. whatever they could, they gathered to the railroads. when they had packed the last train with the last ounce of humanity and machin