What does the seven stars with the moon mean?

It means that seven stars surround the moon.

The seven stars accompanying the moon originally meant that the seven planets revolve around the sun, and also generally meant that one or more of them revolve around a beautiful thing. On a three-year afternoon, seven stars accompanied the moon to the east. The Mid-Autumn Festival of the Big Dipper shines around the moon, which means reunion and mutual assistance.

The big dipper:

The Big Dipper is a part of Ursa major. Graphically, the Big Dipper is located at the tail of Ursa Major. Six of these seven stars are secondary stars, and 1 is tertiary. Through the connection of the two stars in the mouth of the bucket, it extends about 5 times in the direction of the mouth of the bucket and finds the Polaris.

"Star Recognition Song" has: "Star recognition begins with Beidou, and then begins from north to west." Beginners can look for other constellations in turn from the Big Dipper. The seven stars of Ursa Major are arranged in the shape of a spoon. The ancients attached great importance to Beidou because it can be used to identify the direction and set the season.