In the 15th century, China's old barbarian enemies were threatening the nation once again
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In the 15th century, China's old barbarian enemies were threatening the nation once again
Full Transcript
00:00:01.000 --> 00:00:02.092
In the 15th century,
00:00:02.092 --> 00:00:05.002
China's old barbarian enemies
00:00:05.002 --> 00:00:07.293
were threatening the nation once again.
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Movie Summary
A fascinating look at how modern day structures and engineering technologies have been inspired by ancient discoveries.
