The twelfth month is actually a month of sacrifice. As recorded in "Fengsu Tongyi" by Ying Shao of the Han Dynasty: "In the Xia dynasty, it was called Jiping; in the Yin dynasty, Qingsi; in the Zhou dynasty, Dazhe; and in the Han dynasty, it was renamed as La. 'La' means hunting, indicating that people went hunting in the fields to obtain animals for sacrificing to their ancestors."
Actually, this means that the twelfth month is a month of sacrifice, and at this time, people should go hunting in the suburbs and then use the hunted animals to offer sacrifices to their ancestors. This "La sacrifice" became the origin of the name "twelfth month," and it has little to do with the natural seasons.
However, for us, the twelfth month is the month with the strongest sense of the Spring Festival. It is the time of transition between the old and the new, and it is the prelude to the arrival of the Spring Festival. People begin to plan celebrations for the Spring Festival and prepare various items, so the twelfth month is deeply marked by folk culture.
The twelfth month begins with drinking Laba porridge. Then, people will clean the house, invite incense, worship the kitchen god, seal the official seals, write Spring Festival couplets, and buy New Year goods. There is a traditional children's rhyme from old Beijing about the twelfth month: "On the 23rd day of the twelfth month, sugar cakes stick; on the 24th day, sweep the house; on the 25th day, fry tofu; on the 26th day, boil pork; on the 27th day, kill a rooster; on the 28th day, ferment the dough; on the 29th day, steam buns; stay up all night on New Year's Eve; and on the first day of the New Year, dance joyfully."

"La" originally meant dried meat, and it was extended to refer to the sacrificial ceremony held at the end of the year using meat to offer to various deities. The twelfth month of the lunar calendar is called "La month" mainly because of the sacrificial rituals. In "Fengsu Tongyi" by Ying Shao of the Han dynasty, it says: "In the Xia dynasty, it was called Jiping; in the Yin dynasty, Qingsi; in the Zhou dynasty, Dazhe; and in the Han dynasty, it was renamed as La. 'La' means hunting, indicating that people went hunting in the fields to obtain animals for sacrificing to their ancestors." Therefore, the twelfth month is known as the "Month of Sacrifice."

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