The pattern
Red tea varies by region less than oolong does, and the oxidation step is the reason.
Full oxidation flattens many of the markers that make a place recognisable in greener categories.
What survives it is leaf type, and that is where the real differences sit.
Tongmu in Fujian produces a smoked tea, and smoke is the one regional marker oxidation cannot erase.
Qimen in Anhui gives an aromatic cup with a faint cocoa note and a clean finish.
Dianhong from Yunnan is broad leaf, malty and strong, and it holds its shape under milk.
Yingde in Guangdong sits closer to Dianhong than to Qimen, because the leaf is the same kind.
So the map has two clusters rather than a list of separate places.
Small leaf teas cluster around aroma, and broad leaf teas cluster around body.
Anyone who learns that division has learned most of what the regions can teach.
The remainder is grade, and grade is not a regional question.
What drives it
Leaf type comes first, and it is the single biggest split in the category.
Small leaf sinensis gives aroma and a lighter body, and it is what Anhui and Fujian mostly grow.
Broad leaf assamica gives malt, colour and strength, and it is what Yunnan and Guangdong grow.
Climate supports that split, since assamica needs the warmer latitude it gets in the south.
Method comes second, and the smoking at Tongmu is the clearest local method still in use.
Orthodox manufacture is what separates a Qimen from a crush, tear and curl tea made in the same county.
Grade comes third, and it often outweighs the region in what you actually taste.
A fine whole leaf grade from anywhere beats a broken grade from a famous district.
Trade shaped which names survived, and the export ports decided more than the growing conditions did.
Qimen was built for the British market in the 1870s, and it was designed from the start to be blended.
That history explains the flavour better than any map of Anhui manages to.
Altitude is marketed heavily in red tea and matters far less than leaf type does.
Learning the map
Learn this map by leaf first and by place second, and it becomes simple.
Step one is to taste a broad leaf tea against a small leaf one, brewed plain and side by side.
That single comparison teaches more than any amount of reading about districts.
Step two is to taste a smoked Lapsang against an unsmoked red tea from the same province.
Smoke is the only regional marker in red tea that you can identify in one sip.
Step three compares grades within one district, and it is where the surprises are.
A broken grade Keemun and a whole leaf one taste like different teas, and only one deserves the name.
Step four, if you want one, separates Qimen from the other small leaf districts.
That step is genuinely difficult and mostly unrewarding for a drinker rather than a trade buyer.
Treat the core names as confirmation of leaf type rather than as descriptions of flavour.
Nobody can taste Anhui in a cup, and anyone who claims otherwise is selling something.
Tasting across regions
Brew red tea hot and short, because the category gives up its tannin quickly.
Use 5 grams in a 100 ml vessel at about 95 °C and steep for 30 seconds.
Taste everything plain first, and only then decide whether a tea wants milk.
Small leaf teas will show a floral or cocoa aroma and a lighter body.
Broad leaf teas show malt and a darker liquor, and they survive milk without collapsing.
With Lapsang, smell the dry leaf before anything else, since pine resin and smoke flavouring are not the same smell.
Real smoke lingers in the empty cup after the tea has gone, and applied smoke does not.
Run each sample to the 3rd infusion, because red tea rarely rewards a longer session.
By then the aroma has dropped away and what is left is body, which is the regional part.
Keep the session to three teas, since red tea fatigues the palate faster than most categories.
Three clear comparisons beat six muddled ones, and the notes you keep are the only thing that matters.