Is it an idiom that a prince is better than a prince?

Is "Wang Zining wants seeds" an idiom?

"Princes will have seeds" is not an idiom.

"Princes and princes will meet" is an idiom.

Princes and princes _ idiom explanation

Pinyin: Wang hóu Jiang Xiang

Explanation: Generally speaking, it refers to the respected, generous and powerful aristocrats in feudal society.