Traditional Culture Encyclopedia - Weather forecast - What does today's λ plum mean on the calendar?

What does today's λ plum mean on the calendar?

It's the beginning of the rainy season to enter Mei today. It's just that it's getting rainy and muggy. This is the result of the interaction between high pressure airflow and low pressure airflow. When these two air currents finally reach a balance, the rainy season is over. Generally, the cycle is as short as one week and as long as one month.