How can taichu calendar method be more reasonable than the previous year-end leap method?

Taichu calendar adopted Xia Zheng, taking silver moon as the beginning of the year, which was in tune with the agricultural rhythm of spring planting, autumn harvest, busy summer and idle winter.

Taichu calendar stipulates that a month without neutral gas is a leap month. Among the 24 solar terms, the odd-numbered solar terms, namely, winter solstice, severe cold, rain, vernal equinox, Grain Rain, Xiaoman, summer solstice, intense heat, intense heat, autumnal equinox, first frost and light snow, are also called zhongqi. Anyone who doesn't meet the gas in the lunar month will have to make up a leap month in the future. This method is obviously more reasonable than the previous year-end leap method.