This August, Aibota Zhanibek received a surprising call in Kazakhstan from a relative through Chinese chat app WeChat. It was about her sister, Kunekai Zhanibek.
Aibota, 35, a Kazakh citizen born in China, knew that Kunekai, 33, had been held for about seven months in a detention camp in China's Shawan county, in the northwestern region of Xinjiang. For six of those months, Kunekai was forced to make towels and carpets for no pay, Aibota says. On the call, Aibota was told that Kunekai had been released and assigned a job in Urumqi, the capital of Xinjiang.