Hunan man cares for forests for 25 years

The way he passes time is to sing. "I bought a radio in the second month after I came to the observatory station," he said, adding he listens to the radio every day and sings songs every day.

Du said a sightseeing pavilion will be built beside the observatory station in the near future.

"The sightseeing pavilion will bring tourists here," he said.

"I'm a son of the mountain, so it's my duty to take care of it," said Du.