Literature Reference: 乔木托危岫，积翠绕连冈。—— 《送刘散员同赋得陈思王诗山树郁苍苍》 Tall trees rest on steep peaks, while lush greenery surrounds the continuous ridges. Source from 'Sending Off Liu Sanyuan as We Write on Cao Zhi's Poem: The Mountain Trees are Lush and Verdant'.