Photo shows Ji Baoren (middle) telling his story about planting trees at Mount Tai to his son Ji Xiuzhong and grandson Ji Zenglei at Mount Tai Scenic Spot on Oct. 24.(Photo:Xinhua)Respectful and honorable! A granddad planted trees, the father guards the trees and the son protects the trees. These are the three generations guarding the mountains and trees at Mount Tai.