BuzzFeed News describes their methodology as “BuzzFeed News interviewed 28 former detainees from the camps in Xinjiang about their experiences. Most spoke through an interpreter. They are, in many ways, the lucky ones — they escaped the country to tell their tale. All of them said that when they were released, they were made to sign a written agreement not to disclose what happens inside. (None kept copies — most said they were afraid they would be searched at the border when they tried to leave China.) Many declined to use their names because, despite living abroad, they feared reprisals on their families. But they said they wanted to make the world aware of how they were treated.
“The stories about what detention is like in Xinjiang are remarkably consistent — from the point of arrest, where people are swept away in police cars, to the days, weeks, and months of abuse, deprivation, and routine humiliation inside the camps, to the moment of release for the very few who get out. They also offer insight into the structure of life inside, from the surveillance tools installed — even in restrooms — to the hierarchy of prisoners, who said they were divided into color-coded uniforms 1) based on their assumed threat to the state.”
“Their accounts also give clues into how China’s mass internment policy targeting its Muslim minorities in Xinjiang has evolved, partly in response to international pressure. Those who were detained earlier, particularly in 2017 and early 2018, were more likely to find themselves forced into repurposed government buildings like schoolhouses and retirement homes. Those who were detained later, from late 2018, were more likely to have seen factories being built, or even been forced to labor in them, for no pay 2) but less oppressive detention.”
No corroboration provided. 3)
The use of inverted commas in statements from officials indicates scepticism or outright rejection of these explanations. No rationale for this scepticism is provided.