方丹此次拜访的林场瞭望员于成，就是这些守林人中普普通通的一个。
他的父亲是第一代林场人。在很多人眼里，常年与山林为伴的瞭望员是寂寥而艰苦的。
Many would find Yu’s job intolerable, with the trees and mountains being his only companions much of the year. But for him, looking after the forest planted by his father is an act of faith.
于成的工作常人很难忍受，常年只有山林与他为伴。但看护好父亲亲手种下的这片林子，便是他强大的精神信念。
世界最大的人造林
