Only tangentiao related but funny story. While visiting a college campus in China in 2012 our tour guide remarked about one of the dorm buildings... "This building is very old! Built in the 1980s!". I thought that was funny after growing up in New England.
I grew up in New England, visited historic sites like the Jamestown, Colonial Williamsburg, Castillo de San Marcos. I went to France and stayed in a house that was older than all of them, went to England and drank in a pub yet older.
My first trip overseas was to the UK, during university, as a term abroad kind of thing. One night, some of my peers and I went round the pub, and I got to talking with an older local. I commented that it was a strange and perspective-shifting thing to be around human structures so old, "which we don't have back in the States".
He offered the counterpoint of, e.g., Chaco Canyon as something even older.
Time is indeed relative. That kind of perspective-check is awesome.