China kidnap: Woman, 18, kept as sex slave in underground cellar for 11 days before escaping after 'cutting ties with nail file' China Chen Xiaolong kidnapped woman after meeting her karaoke bar Migrant worker tied her up in tiny cellar he dug himself under his home He repeatedly raped the teenager and threatened to kill her She escaped after cutting her ties and calling to his neighbours for help Chen was arrested that day and faces kidnap and multiple rape charges A migrant worker in China kidnapped and repeatedly raped teenage woman over 11 days in a cellar he dug under his rented home. Chen Xiaolong, 36, faces kidnap and multiple rape charges after holding the 18-year-old captive in the cramped basement beneath his single-room house in Jiaxing, Zhejiang Province. Chen confessed to imprisoning the woman and threatening to kill her. She managed to escape after cutting her ties with a nail file, according to local reports. Chen Xiaolong, 36, dug the makeshift dungeon (entrance pictured) under his home in China before kidnapping and repeatedly raping an 18-year-old woman The woman was held captive in the tiny cellar for 11 days and was chained and raped before escaping The prison (pictured, view looking up from cellar) was accessed through an entrance the size of floor tile Chen spent six months digging the tiny cellar to house a kidnapped woman During 11 days of captivity, the woman was raped repeatedly, kept nude all the time and only allowed to leave the cellar twice, in order to take a bath in the room above. She managed to work at gradually cutting her chains using a secreted nail file and was finally able to break free and escape. Chinese media reported the woman waited for Chen to leave before running for help. One neighbour told the Qianjiang Evening News. [She was crying] "if you do not help me, this man will kill me tonight." He was arrested that night by police after returning to his home in the migrant village. The woman was taken after meeting Chen at a karaoke bar on June 12. Chen lived in a squalid one-bedroom home where he dug the underground prison (entrance centre) He had rented the one-bedroom house since 2012 and spent six months digging the cellar (right) Pictures of women adorned the walls of Chen's house and were even put up in the cellar among various ropes He persuaded her to get onto his electric tricycle but then drove her to a secluded area where he threatened her with a knife and electric baton. Chen then stripped and chained the woman up in the tiny 9ft by 3ft cellar. The underground prison was just 5ft high and accessed through a tiny entrance the size of a floor tile. Chen began secretly digging the cellar after renting the house in 2012. He had plastered the walls and lined the entrance with plastic sheets and newspaper. When police arrived after the woman had raised the alarm they found stashes of porn and images of women on his front door and walls. The woman was only allowed to leave the cellar twice and was forced to use this red bucket as a toilet Male enhancement pills were among the disturbing items found in Chen's house Chen's ID card. He was arrested after the woman managed to escape and call to neighbours for help Chen lived in filthy conditions with drawings on the wall and dirty floors and furniture Male enhancement drugs were also found. Chen also threatened to post naked pictures of the woman online. Police said Chen told them that violent plots in online novels and pornography influenced his actions. 'He said he got the idea from reading pornography on the internet,' said a police spokesman. 'Once the girl's chains were broken she could get out of the basement and made so much noise screaming that Chen's neighbours came to see what was happening,' he added. Chen's house in the migrant village in Jiaxing, Zhejiang Province Police said the woman managed to attract neighbours' attention when Chen left the house by screaming Neighbours pictured outside Chen's house. One said they heard the woman scream for help after she escaped and said she thought he would kill her if he returned