What are the numbers when it rains at four and eight?

The number of four seasons and eight festivals refers to: the "four seasons" in the "four seasons and eight festivals" refers to spring, summer, autumn and winter; "Eight festivals" refer to the earliest eight important festivals in the 24 solar terms, namely, the solstice in winter, the solstice in summer, beginning of spring, Changchun, beginning of autumn, beginning of winter, the vernal equinox and the autumnal equinox. These eight solar terms are the seasons that mark the beginning and end of the four seasons of Yin and Yang, which we usually call the four seasons and eight festivals.

The time of each rain is: if the weather conditions are divided into cloudy, light rain, moderate rain, heavy rain and sunny, they are represented by the numbers 1, 2, 3, 4 and 5 respectively. So it rains at 2, 3 and 4.