两千年

The feudal system lasted for two thousand years in China.

封建制度在中国延续了千年之久。

For two millennia, exogamy was a major transgression for Jews.

千年来，异族通婚一直是犹太人一大禁忌。

I have mentioned all this in terms of its roots, to demythologise the absolute nonsensical myth of it being a 2000 year old Sufi system.

这些事情，都是从根源上说起，目在驳斥那个荒谬绝伦无稽之谈，千年古老苏非体系。