画龙点晴

Explanation: Metaphor of writing or speech, at a critical place in a few words highlighted substantive, so vivid and powerful content 　　Source: Tang Zhangyan far "art history in mind Monk Yao": "White Dragon Jinling not point Anlesi four eyes, each saying: 'dotting the fly.' People think that jump Festival, please point solid. A minute later, lightning broken, Yunteng to heaven by two dragons, two dragons who did not see in the eye. " 　　Examples: This sum of ~, strongly suggests the theme.