In the north , China annexed today 's Yunnan in the 1380s , stamping out the final Shan resistance by the 1440s .
The Shan States were too fragmented to resist the encroachment of bigger neighbours .
In the north , China annexed today 's Yunnan in the 1380s , stamping out the final Shan States resistance by the 1440s .
The Shan States were too fragmented to resist the encroachment of bigger neighbours .