What constellations does air signs refer to?

The four signs of the constellation include earth, fire, water and wind.

Obviously, air signs is one of the four constellations, including Gemini, Libra and Aquarius.

People in air signs are innovative, flexible, smart and have strong communication skills, so they all have a good relationship.

People in air signs are occasionally moody, which makes people lose their minds, and they have strong learning ability and can quickly accept knowledge. Their emotions also have sentimental parts, but they never show them.

They have a lot in common, but there are also many differences.