画龙点睛这个成语与南北朝时期的画家张僧繇有关。传说称，他一旦给自己画的龙点上眼睛，龙就会“飞走”。这个成语多比喻一个人写文章或讲话时，在关键处点明实质，使内容生动有力，也常用于赞扬他人创作之精妙。

　　huàlóng diǎn jīng means to bring the painted dragon, or Loong, to life by putting in the pupils of its eyes.

　　This idiom is related to the story of Zhang Sengyao, a painter dating back about 1,500 years.

　　Once he added eyes to the dragon he drew, it would come alive and fly away.

　　It is often used to describe the effectiveness of a writer or speaker who uses a few key sentences to bring a topic alive. It is also used to praise others for their creative genius.

责任编辑：【彭大伟】