Duliu River flowing down from Guizhou brings the culture of the Dong ethnic minority group to the Guangxi people and is the only autonomous county of Dong people in Guangxi.

The ethnic Baluch are in a minority in the city, which is dominated by Pashtuns, the biggest ethnic group in Afghanistan, making it easy for Afghans to melt into Quetta.

It will also worsen Afghanistan's main ethnic division between Pushtuns, Mr Karzai's group, and a powerful Tajik minority who voted mostly for Dr Abdullah.