Extreme sport enthusiasts have been known to risk their limbs and their lives during all sorts of daredevil acts -- but all are chasing the same thing: the breathtaking adrenaline "high" that comes with staring death in the face. China's top slackline walker Chen Hui has finished a challenge in a canyon in central China's Henan Province.

The 36-year-old daredevil is showing off his balancing skills at a valley nearly 90 meters above the ground.

The line is nearly 100 meters long and less than 3 centimetres wide. It's fixed between two anchor points but is not taut, making it a whole different sport from tightrope walking. His dangerous tricks have left many tourists stunned.

A tourist in Rock Climbing Park, Henan Province, said, "We appreciate his guts, it is impossible for ordinary people."

Even though he's wearing a safety rope to prevent him from falling to his death, there are still high risks that could turn these kinds of stunts into an instant tragedy. But the slacklining veteran also has more than 10 years' experience under his belt. He said extreme sports are now a focal point in his life.

Chen Hui said, "I've been doing extreme sports for a decade, the increase in body strength is the biggest benefit, it makes my life exciting."

Slacklining's origins can be traced back to the US in the 1980s, but it has grown hugely in popularity over recent years around the globe and has developed into various forms.

(CNTV May 10, 2012)