They've 'immersed' themselves in the forests, and what happened?

When Zhao Fuzhou first arrived at the Saihanba Mechanized Forest Farm to work as a fire lookout, he was only in his early 20s. And now, the grey-haired old man, together with his wife and son and many others, have become the guardians of the world's largest artificial plantation in north China's Hebei Province. In addition to mountain patrol and fire prevention, they have concerns about vegetation health, wild deer population, and pest and rodent controls. The last five episodes of Journeys in Nature: Hebei Weichang Series take you into the stories of these little-known but great people.