> Sorry, did I miss something? *Are we talking only about *Hunan* heicha?

No, it's the general term "hei cha" and it's category name. But the
guy I was talking to is from Hunan. So I thought since they're
marketing Hunan heicha, perhaps like Yunnan Puer, it would be a good
idea to find a suitable local name to market the teas under. But that
may only partly work. Still doesn't solve the problem of which
category to put the tea under, as on vendor websites.