Ask for advice: how to determine the life palace of leap month

First of all, we should figure out what a leap month is. Constellations follow the solar calendar and there are no leap months. Everything is arranged according to the solar terms. Spring rain begins in January, and it is divided into February, and so on. Although it is not arranged by solar terms, it is also related to solar terms. Specifically, although it is not synchronized with the solar terms, the qi of the same month must be within the lunar month to be counted as a month, such as the lunar calendar. Although January is not divided by beginning of spring and Grain Rain, it is a month.