Historical and social context
Difficult mountain terrain linked Yunnan and Sichuan tea-producing areas with plateau communities and wider border exchange. State horse-tea systems, private traders, pack-animal caravans and local markets overlapped.
How people practiced it
Tea was compressed for durability and transport, then prepared according to local foodways, sometimes with milk, butter, salt or grain. Carriers, inns, bridges, monasteries and market towns sustained the routes.
Why it still matters
The network shows that Chinese tea has always been shaped by cross-cultural exchange. It also helps explain compressed forms, border tea and why one product can hold different meanings in producer and consumer communities.
Practical guidance
When studying a route, identify one origin, one trading town, one carrier community and one destination practice instead of repeating a single romantic map.
Identification and caution
Tourism narratives often blend separate routes and eras. Treat 'ancient road' claims as hypotheses requiring local records, material evidence and clear dates.