Riddle: Are you heavy? Are you rich or not?

This may be a nursery rhyme riddle. The answer is: I don't see you, Cheng; Sink or not, big cargo ship; If you have money, open a pawnshop; Purple is not purple, big eggplant.

The explanation is as follows:

* "Jun Bujun" is Cheng. Cheng once stood on his own feet as king, and later became the founding father of the Tang Dynasty, so he was a monarch rather than a monarch.

* "Sink or not" is a big cargo ship. The cargo ship itself is very heavy, but it floats on the water and does not sink.

* "Rich or not" is a pawnshop. There are many valuable things in pawn shops, but they are not necessarily their own, so there is a stalk with money and no money.

* "Purple is not purple" is a big eggplant. Eggplants are mostly purple, and there are green eggplants. At least the tender eggplant is green. Purple old eggplant is white when it is broken.