The people are for the most part idolaters, but there are also some Nestorian Christians and Saracens…the inhabitants live by trade and industry. They have fine orchards and vineyards and flourishing estates. Cotton grows here in plenty, besides flax and hemp. The soil is fertile and productive of all the means of life. The country is the starting point from which many merchants set out to market their wares all over the world.Marco Polo
This is what Marco Polo wrote about Kashgar, where it used to be most prosperous city of the silk road.
When you live in a place long enough, you came to know a lot of things about it.