Are there any stars in the Mid-Autumn Festival evening? If so, how many? What is the principle?

It depends on the specific weather. If the Mid-Autumn Festival is cloudy, there will be no stars and no moon. If the weather is fine that day, the sky is full of stars and the moon is shining high.

The Mid-Autumn Festival originated in ancient times, popularized in the Han Dynasty, shaped in the early Tang Dynasty and prevailed after the Song Dynasty. Mid-Autumn Festival is a synthesis of autumn seasonal customs, most of which have ancient origins. The Mid-Autumn Festival is a colorful and precious cultural heritage. The full moon is a symbol of people's reunion, a sustenance for missing their hometown and relatives, and hopes for a bumper harvest and happiness.

Extended data:

At first, the festival of "Sacrificing the Moon" was held on the "Autumn Equinox" of the twenty-four solar terms in the Ganzhi calendar, and later it was moved to August 15th in the summer calendar (lunar calendar). In some places, the Mid-Autumn Festival is set on August 16 in the summer calendar. Since ancient times, Mid-Autumn Festival has had folk customs such as offering sacrifices to the moon, enjoying the moon, eating moon cakes, playing with lanterns, enjoying osmanthus and drinking osmanthus wine. It has been circulating for a long time.

Today, eating moon cakes has become an essential custom of Mid-Autumn Festival in all parts of China. In addition to moon cakes, all kinds of seasonal fresh fruits and dried fruits are also delicious in the Mid-Autumn Festival.