What does the plow in the almanac mean?

"Plow" has the following three meanings:

Star name. The handle of the big dipper. "Shentongqi" Volume II: "The elm falls in February, reaching the peak, and the wheat grows in August, with the highest sunshine."

The astrologer refers to the evil spirits in the moon. Xie Ji's Book of Differentiating Prescriptions cites a calendar example: "The first three days are the highest days, the last three days are Hekui, and the opposite is true when the moon is built in Yin."

Taoism is called the god of the 36 stars among the Beidou stars.