Up to a million Muslims are being held in detention camps in the Chinese province of Xinjiang. The Guardian’s Lily Kuo visits the region where authorities are expanding the camps and increasing surveillance on ethnic minorities. Plus: in opinion, the writer Bella Mackie on how running helps her cope with anxiety

The mass detention of Muslims in detention camps in the Chinese province of Xinjiang has attracted increasing international condemnation. The United Nations has asked for access to the camps that Chinese officials continue to insist are “vocational training centres”.

The Guardian’s Beijing bureau chief, Lily Kuo, has travelled to Luopu County in Xinjiang where residents are reluctant to talk about the imposing concrete compounds where people from Muslim minorities, mainly Uighurs, are sent against their will and without trial for months or even years.

Also today: Bella Mackie, the author of Jog On: How Running Saved My Life, on the restorative powers of running and how it helped her cope with anxiety.