Is it the sun sign or the moon sign?

Hello, I'm glad to answer your question.

Generally speaking, the constellation of the sun is the constellation of the moon?

Generally speaking, constellation pairing is based on the sun constellation.

We usually look at the sun sign. The moon, the rising sun and the asteroid have to pass through the disk surface to accurately see the matching degree between them. If you want to be the most detailed, there are many aspects, such as looking at your own Venus, the moon, another Venus and the moon, their blood types, rising and the sun. These are all needed, but they are very complicated. So in the usual pairing, we all look at the pairing based on the sun constellation.