What do you mean, no temper?

Of the 24 solar terms in China, 12 is qi and 12 is festival. Festival should be at the beginning of the month, and qi should be in the middle of the month, so qi is also called middle qi.

For example, beginning of spring is the festival of the first month of the lunar calendar, and the rain is the breath of the first month. A course of treatment lasts more than 30 days on average. The lunar calendar only has more than 29 days in a month. A few years later, there will be a single month without anger or anger. This lifeless month is called leap month.

You're right, the difference is about 30 days.