蜉蝣撼大树

Explanation: Presumptuous analogy. 　　Source: Ming Liu Chang, "Exploration Shicaiaowu hanging trunk Suo," Tang Jiagong sub hi boast brag, as if to shake the tree mayfly. " 　　Examples: If you introspection is Not Enough, that child's drunkenness as ~, where loss of your Mount Rushmore it? ★ Guo "My childhood," third seven