Wow Jim that is lovely information. Seems like pu literally runs in certain families.
Ya, it's kinda interesting, 3 brothers from one Huang family rooted in Yiwu ran Yiwu Guanzizai, Yiwu Yongpin Hao, and yet another unknown brand called 'DianYi' (I was told it's equally wonderful as well) by the junior. They are all very successful.
BTW, four more 'Yuan Nian' cakes, including Yiwu cake mentioned in this thread had been ordered and sent to Kunming. I think I got most prized Yuan Nian teas so far.