China - The eighth wonder of the world

... Does this mean that the Great Wall of China is over 3,000 miles long?
We do not know, just as we do not really know very much about China in general. It takes longer than the fifty, sixty, or seventy years of human lifetime to understand this country, with its 600 million inhabitants and 5,000 years of history. We can only say that the largest nation in the world built the largest wall in the world, for the dimensions of this stone serpent are so staggeringly vast that no explorer, cartographer, traveller, or human criterion of measurement has yet proved equal to the task of assessing them.
The Wall is a genuinely Chinese construction. No other race could have summoned up the unimaginable diligence and energy which the assembling of such an avalanche of stone must have required. The Chinese loves to shut himself up. Walls surround his house, and walls surround his towns. If the Great Wall and all the town-walls in north China were laid end to end, they would encircle the Equator.
These, then, were the seven wonders of the ancient world. The Great Wall of China, the largest wonder of the world, was not reckoned among them. China was not only too far away, but it was also - something which we find difficult to grasp nowadays - regarded at that time simply as a traveller's take (if and when any information about China ever reached the Mediterranean at all).
I have been in Beijing for several times, but I haven't seen the Great Wall of my own country. I saw its images on history text books and on social media during Golden Week holiday. It's weird to say that it hasn't occured to me that, hey I want to take a walk on the Wall. Probably I think the big long wall will be always sitting there, still, quiet, waiting to be admired by locals and foreigners. It's just a matter of time, me going there or not.