Film focuses on heroic efforts of one man to fight drought

More than 100 people walk near the edge of a cliff, and some of them are extremely frightened.

They are the cast of the upcoming film Sky Stream, based on the story of Huang Dafa, Party chief of the village of Caowangba in Zunyi, Guizhou province.

Huang, who turns 83 in November, spent more than 30 years leading locals to chisel an irrigation channel measuring 9,400 meters long into the sides of three karst mountains.