See also: 画龙点睛
draw; picture; painting dragon; imperial; Long (a surname) to dot in the eyes on a painting; to add the finishing touch trad. (畫龍點睛) 畫 龍 點睛 simp. (画龙点睛) 画 龙 点睛 Literally: “to draw a dragon and dot in the eyes”.
From the story of the famous painter Zhang Sengyou.