Exploring the Three Most Prominent Highways, how did the Chinese build roads on cliffs？

"To get rich, build roads first." However, at the beginning of the founding of China, the total mileage of railways in the country was only 22,000 kilometers; the mileage of highways was only 81,000 kilometers, and there was no expressway; there were only 12 civil aviation routes. At that time, China's road transportation was extremely backward, and people carrying things on their backs were the main mode of transportation. However, after entering the 21st century, China's speed has become a resounding name card, and highways lead to all parts of China.

Many of China-building roads have created miracles in the history of world because of their beautiful scenery, complex construction difficulties and unique appearance. What are they? Have you heard of any of them? In this video, let's take a look at the three most prominent highways in China.

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[ryangoh]

Thank you...these should be all be in the list of Wonders of the World