The physical conditions of the Autumn Breeze Festival are as follows:

I. Temperature Decline

The Autumn Breeze Festival is characterized by a gradual decline in temperature. The sunlight gradually diminishes during the day, and the temperature at night begins to gradually decrease. The autumn wind blows, refreshing and cool, and people gradually transition from the hot summer to the cool fall, begin to wear light jackets and feel the change of season.

Second, the air pressure is stable

Autumn wind season, the air pressure is relatively stable. As the hot weather of summer wanes, the air pressure tends to stabilize. The stability of the atmosphere makes the sky clear and the sunlight pours onto the earth through the gaps of the autumn leaves, creating a golden yellow autumn scene.

Three, the humidity decreases

Autumn wind season, relatively dry. The humidity of summer gradually decreases, and the moisture in the sky gradually condenses, creating a clear blue sky. The reduced moisture in the air makes the sky more transparent, the stars twinkle night after night, and the night sky more blue.

Four, plant weather

Leaves gradually change color: As the temperature drops, the leaves of plants gradually change from green to yellow, red or even purple. This is because the chlorophyll in the leaves gradually decreases, exposing pigments of other colors.

Fruit ripening: Fall is a time when many plants ripen their fruit, such as apples, pears, persimmons, and other fruits, which gradually become fuller and juicier in the fall sun.

Flowering: Summer flowers fade in the fall breeze, and the leaves of deciduous plants begin to fall, signaling the end of the growing season.

V. ANIMAL ACTIVITIES

BIRD MIGRATION: Autumn is the season of migration for birds, many of which begin to fly south in search of warmer temperatures to survive the cold winter months.

Mammals Stockpile Food: Many mammals begin to stockpile food in the fall in preparation for the winter months; for example, squirrels begin to stockpile large quantities of food.

INSECT HIDING: Fall is the season when insects go into hibernation or pupation and find safe places to spend the cold winter months.