Earthworms like 'gold' in the earth

In a 1,500-square-meter warehouse in Southwest China's Chongqing, earthworms crawl in 500 blue boxes each about the size of a television set.

The warehouse is an earthworm farm in Longtai village, Wuxi county. The little wriggling worms have helped many out of poverty.

"In the past, earthworms were just little worms in the village," said Lu Maoliang, Party chief of the village. "Now, they are like gold in the earth."