Getting rooftop guardians back to work

KUNMING - As more traditional houses are replaced by high-rise residential buildings, the tile cat, an ancestral rooftop guardian of the Chinese people, is fast disappearing.

A folk riddle in Southwest China's Yunnan province goes like this: "It looks like a cat or a tiger. It has round eyes and a big mouth. It sits on the roof of everyone's house. What is it? "

Zhang Cai is among the few remaining people who knows the answer.