Man holds girlfriend hostage after her parents refused to let them get married

 
At one point the man, identified as a 32-year-old named Lin, stripped completely naked.
He held his girlfriend by the throat and waved the meat cleaver in the air as trained negotiators tried to talk him down from the roof of the quiet residential block.
The man's relatives were brought to the scene on Monday to try and talk him down but had little luck
  
Eventually police provided one and, still holding his terrified partner, the man put his jeans back on and climbed down from the roof into a city square. 

But as he made his way towards the car officers gave chase, managing to pull him away from his girlfriend and throw him to the ground.