What's the number of the 24 solar terms? How many solar terms are there in a year?

2. When the sun reaches 345, it will cross the Gregorian calendar on March 5-6. Sting reflects the phenomenon that natural creatures germinate and grow under the influence of rhythm changes. Speaking of earthquakes, the sun's spirit rises, the temperature warms up, the spring thunder suddenly moves, the rain increases, and everything is full of vitality. Farming production is closely related to the rhythm of nature, and the solar term of fright is of great significance in farming, which is the reflection of ancient farming culture on natural festivals.