Visitors at panda base review its path from nursing to 'sexercise'

Xiao Li has visited the Chengdu Research Base of Giant Panda Breeding in Sichuan province nine times this year, showing around relatives and friends who have come from outside the province.

"They say they must see pandas in Chengdu, and they have a good time watching the bears in trees or eating bamboo in enclosures," she said.

In the 1980s, many bamboo plants in the region blossomed and died, which led to a food shortage for pandas in Sichuan. Many wild pandas went hungry. And some fell ill.