When not battling the wild, the biggest fear is getting lost. Several times,while walking in the mountains, Yang ran into heavy fog and when the fog lifted, he found that he had been going around in circles in the same area.

In recent years, the condition of roads leading to the mountain has improved. Police cars can drive directly to the foot of the mountain.But, thereafter, Yang and his colleagues have to climb the mountain on foot. So many years of climbing the same mountain has made Yang a kind of specialist; he knows the mountain best while most of his former colleagues have moved on,retired or even died.

There are four other police officers and six auxiliary police officers assisting Yang in his work.

Asked how he tolerates the harsh working conditions, Yang's reply is simple: "I am the child of a farmers' family. I passed the national college entrance examination and got a job that changed my life. I am very grateful to the country, and I am determined to repay it."

Jiang Linzhi, Party chief of the Guilin Police ecological and environmental protection branch, said:"Yang has set us a good model with his perseverance. We are obliged to fulfill our duties to help Guilin develop into an international tourist resort."