Question

一叶蔽目一叶蔽[障]目[yī yè bì mù]1.■shade the eyes with a leaf; A single leaf before the eye obstructs one's vision.:一叶蔽目， 不见泰山。A leaf before the eye shuts out Mount Tai -- have one's view of the important overshadowed by the trivial.; A single leaf before the eye blacks out the view of a mountain.