What is the meaning of the nine columns in the yellow calendar?

(1). Name of the star. Tian Wenzhi, Jin Shu: "Nine planets are in the south of Chenguang Niu." Petunia means cowshed. (2) Nine horizontal layers. Ming Peng Dayi's "Mountain Hall Test Cat": "The cat has three hurdles and catches a season; After five passes, six generals will be killed and two seasons will be rushed; Seven hurdles to catch up with three seasons; Nine hurdles to catch up with the four seasons. People with nine hurdles in their mouths can catch mice all year round. "

Word decomposition

The interpretation of nine is nine, eight plus one (the word "nine" is often capitalized on banknotes and documents): nine returns. It refers to many or most times: a narrow escape. Cloud nine. Radical: Hey; The explanation of a pit is a low and uneven place, a pit: a frog in a pit (referring to a person with shallow knowledge). Rough. Natural or man-made steps: ridges. One of the gossip of Tiankan stands for water. Refers to the most urgent place or time when the time is ripe: this can be said to be a hurdle. Of bad luck or compulsion