Photo shows a volunteer hanging a sign after planting a tree in Lhasa, southwest China's Tibet Autonomous Region. [China Tibet News/Wang Weiwei]

Photo shows a mother and her child planting a tree in Lhasa, southwest China's Tibet Autonomous Region. [China Tibet News/Wang Weiwei]

Recently, the annual tree planting activity has been carried out by Tibet Business Daily in Lhasa, which played a positive role in improving Tibet's environment and provided a perfect practice opportunity for local citizens and students. 100 volunteers participated in the activity.