Przewalski's horses making a comeback

"We combined the traditional captive breeding model with a semiopen-range model at the center to enhance the physical fitness of the horses," Ma said. "We let them roam freely in the enclosure for exercise."

So far, 110 Prezewalski's horses from the center have been released into the wild.

"I believe there will be more in nature as a result of the open-range experiment," Ma said.