It is the most complete and best preserved city wall in all of China, dating back some 600 years.
There are a number near here, dating back some three thousand human years.
The county has a history dating back some 1800 years.
They have a long history, some dating back a couple hundred years.
But I've just heard some correlations that must date back a long way.
It is a game with numbers that may date back a century or more.
They've got quite a thick file, dating back a good long time.
As some of you have recalled, it dates back a long way.
The case dated back a while, almost a year in fact.
However, there is no evidence that this practice dated back any earlier.
