That's according to firsthand accounts obtained by the BBC.

It's estimated more than a million men and women have been detained in the camps in China's northwest Xinjiang region.

China claims the camps a re education centers to de radicalize week Er's and other Muslim minorities.

Our correspondent Matthew Hill has spoken to several former detainees and workers, and you may find some of their accounts distressing Tass.

And I is I wouldn is reliving a story she Kenbrell early.

Bring herself to tell.

She was held at one of Xinjiang's so called reeducation camps.

Thes satellite images show the site where, terse in I says she was held sharing a cell with 13 other women with a bucket for a toilet on.

She's haunted by one image masked men coming down a camp corridor like this one after midnight, which until they were three men, which not once but three.

They did whatever evil their mind could think off, and they didn't spare any part off my body fighting it to the extent that it was disgusting to look at, they didn't just rape, they were barbaric.

They had bitten all over my body.

The U.

S.

Have granted her safe refuge after investigating her claims.

She's waived her right to anonymity on Now, feels free to speak out about the full extent of the abuse she says she suffered.

They had an electric pattern.

E didn't know what it waas.

It was pushed into my private parts and I was tormented with electric shocks.

It's estimated over a million.

We Gers and other Muslims were held in the camps.

He's never before broadcast pictures were filmed secretly in a camp under construction and published by a magazine on religious liberty.

We've interviewed a former guard and seen his Chinese police documents.

He is the first ever to come forward on the risk of him.

Speaking to the BBC is so great we've reconstructed the interview with an actor.

Jews who were taken inside were locked in a cell which hold 8 to 16 inmates.

There were cameras watching them all the time on that.

There were books about Xi Jinping.

They have to study the book and memorize them in Chinese If they fell.

The punishment was weird.

Many former camp inmates fleet to Istanbul.

Some talk of having to choose between punishment, all being complicity in these crimes.

E.

Worked six months as a cleaning worker for the women.

Han Chinese men would pay money to have their pick of the pretty young inmates.

This was the first time goals Era has told anyone the full extent of what she says she was forced to do.

My job is to remove their clothes and then handcuffed, um on their beds so they cannot move, move, move.

We can't say if the rape is approved by the camp commanders or even by those more senior.

But the accounts of the many women I've spoken to include gang rape in public on a similar in brutality, the weaker rights group that helped terse and I get to America say Therefore, stories don't emerge until later.

Survivors of the camps have told of horrific tortures.

Very often.

Sexual abuse, however, is told in less detail.

It's traumatic to remember on.

Women are often afraid of bringing shame to their own family members, The Chinese government said in a statement of the Xinjiang camps offered vocational and educational training to tackle extremism on terrorism.

It did not address directly the accusations of rape on torture.

But, it added, the Chinese government attaches great importance to women's rights, lies on absurd accusations, including mass detention.

Do not hold water.

It is very obvious their goal is to destroy everyone and everyone knows it.

Thies women are done.

Much of the testimony of the women, like terse and I I've spoken to is too disturbing to broadcast.

But it's important.

They say The world knows what's happened to them.

Matthew Hill, BBC News Really, you can read.

The BBC's exclusive report on the week is with Maura Eyewitness accounts and analysis on our website.

Just go to the usual place BBC dot com, and it's in the World News China section.