Heartbreaking footage shows a deaf-mute man sat in chains after his own mother locked him inside a stone hut for more than 10 years.
Wang Zhiqiang, now 41, was born unable to hear or speak, his mum Yue Rong, 77, revealed.
But as a child he still showed signs of intellect, so his family sent him to a special needs boarding school.
Only his time there proved to be a traumatic experience after he was severely bullied .
As a result Wang Zhiqiang, who lives in Xuanhua in Dengfeng City in Henan, China, developed psychological issues.