What is the student, an idiom?

Lively and vividly

Pronunciation xǔ xǔ rú shēng

Explanation Xuxu: Lively and lively appearance. It means that the artistic image is very realistic, as if it is alive.

Source: "Zhuangzi." "On the Equality of Things": "In the past, Zhuang Zhou dreamed of a butterfly, and it was a lifelike butterfly. It was a metaphor for his will and his will! He didn't know the Zhou Dynasty. Suddenly he felt it, and the Zhou Dynasty was confused."

Example the shrimps in these paintings so ~, because he has deeply observed the life of real shrimps, and the changes in pen and ink and portrayal have reached a very high level.