Triplet brothers Zhang Jian (L), Zhang Zhong (R) and Zhang Hua check a tree planted 37 years ago by them at the Gonglongping tree farm in Bijie City of southwest China's Guizhou Province, Jan. 3, 2019. Following their father's devotion to forest protection, the triplet brothers, born in 1966, have remained at their posts as forest rangers in Beijie for 37 years. (Xinhua/Han Xianpu)