?The world must boycott?: Australian Uyghur calls for more pressure on Beijing Games

What Almas Nizamidin knows of his wife's arrest and disappearance is second-hand: the harried reports relayed by his relatives as it rapidly unfolded.

There, the police shoved a bag over her head, forced her into a car and drove her away. Her husband, her family, and her friends have not seen her since.

She remains incarcerated in Xinjiang Women's Prison, sentenced to seven years' jail on "disturbing social order" charges her family says are baseless.

The purpose of the doctor's visit that day was to confirm what she'd earlier discovered with a home test: she was pregnant with her first child.

The fate of that unborn baby is unknown. But half a decade and half a world away, Nizamidin is certain his child was lost.

It's a sunny Adelaide morning when the Guardian speaks with Nizamidin under the shade of a eucalypt, in a park close to his home.

"It's a very quiet city," he says. "But beautiful, very peaceful. Every day, I love it."