What parts does Dayan calendar divide our calendar into?

What are the seven parts of China's calendar that didn't have a uniform format in the past? Treading on thin ice discusses how to calculate the 24 solar terms and the time when the moon shines. The content of "gradual convergence" includes seventy-two phases, sixty-four hexagrams and the rule of definite leap; "Step by step" discusses how to calculate the position of the sun; Step away from the moon discusses how to calculate the position of the moon; "Step by step exposure" is used to calculate the shadow length and day and night leakage; "BBK" discusses how to calculate the solar eclipse; "Step Five Stars" introduces the position calculation of five major planets.