Besides expert engineering and tough physical persistence, transport of building materials up these canyons, jagged hills and mountains were almost impossible, even with modern equipment and machinery these days. How on earth did they do it over the last few thousand years with only manpower?
@bencyber8595
5 жыл бұрын
nobody knows......... mystery
@ge2jerry271
4 жыл бұрын
incredible great ENGINEERING in the world!
@lingwu2666
4 жыл бұрын
我二0一年去过长城真是亡不了🈶️人说,不到长城非好汉。
@bencyber8595
5 жыл бұрын
could it be eroded by rain and sun over the decades .....
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