“One village, two countries” used to be the tagline for Yinjing on China’s south-western edge. An old tourist sign boasts of a border with Myanmar made of just “bamboo fences, ditches and earth ridges” - a sign of the easy economic relationship Beijing had sought to build with its neighbour.
Now the border the BBC visited is marked by a high, metal fence running through the county of Ruili in Yunnan province. Topped by barbed wire and surveillance cameras in some places, it cuts through rice fields and carves up once-adjoined streets. China’s tough pandemic lockdowns forced the separation initially. But it has since been cemented by the intractable civil war in Myanmar, triggered by a bloody coup in 2021. The military regime is now fighting for control in large swathes of the country, including Shan State along China’s border, where it has suffered some of its biggest losses.
The crisis at its doorstep - a nearly 2,000km (1,240-mile) border - is becoming costly for China, which has invested millions of dollars in Myanmar for a critical trade corridor.