First of all, you need to buy a ring (note: boys buy female rings and girls buy male rings, so that the special effects displayed after the exchange will be consistent)

Then click on the ring, and the right side of the ring will display: signature (as shown below).

Then click Sign.

You can choose the carat number of ring diamonds, but 1 carat needs 100 magic beans (Klado is more or less useless).

Then click the signature and the following figure will appear, that's all.

To make you understand better, I signed a ring. . . Take it!

Note: Rings that have not been exchanged, whether signed or not, cannot be displayed.

-Peach's answer is over.