http://www.marshaln.com/tag/yixing/
There is a lot to learn and some nice pots to look at. But some of the pots in the collection have me wondering:

In their box like two peas in a pod.

Two identical tiny pots. The author of this blog has three sets that come in pairs like this. I've also seen pairs of identical pots used in videos of gongfu as well.
What is the purpose behind having two pots like this? Just to preserve the tiny pot brewing process but make more tea? Is it romantic? (I certainly think so)
I have searched the web high and low for information on "pair of teapots" but I can't find anything, maybe it isn't really a thing, it's just that this one tea blogger likes finding two of the same pot. But then there are the videos, always with two matching pots. Why? The mind races!
Anyone know anything about this? Do you have any perfect pairs?