Documentary series takes viewers back in time to see aerial footage of how earlier landscapes in China were shaped, including the Great Wall, Kublai Khan's legendary lost city and a newly-di... Read allDocumentary series takes viewers back in time to see aerial footage of how earlier landscapes in China were shaped, including the Great Wall, Kublai Khan's legendary lost city and a newly-discovered city from 4,000 years ago.Documentary series takes viewers back in time to see aerial footage of how earlier landscapes in China were shaped, including the Great Wall, Kublai Khan's legendary lost city and a newly-discovered city from 4,000 years ago.