51-year-old Mr. Li has been been coming to Changle Park in Xi'an for three years now, practicing his unique form of exercise: falling down the stairs.
The shirtless Li climbs the 20 steps in the park and rolls down again and again to the dozens who gleefully watch his bizarre routine.
According to regular park-goers, Li comes to "exercise" every day, and is a regular participant in local marathons.
"The main thing about rolling down stairs in alleviating pressure," Li says. Afterwards, "your whole body feels much looser."