The winter solstice in 20 19 is on February 22nd of lunar calendar19, also known as "winter festival", "long solstice festival" and "sub-year", which is an important solar term in China lunar calendar and a traditional festival of the Chinese nation. The winter solstice is the earliest of the 24 solar terms, which originated in the Spring and Autumn Period.

Climatically, during the winter solstice, the average temperature in the northwest plateau is generally below 0℃, and the southern region is only about 6℃ to 8℃. In addition, the winter solstice began to count nine, and the winter solstice became the first day of counting nine.

As for "Counting Nine", a folk song goes like this: "If you don't do it in September and September, you will walk on the ice in March and April, and if you look at willows along the river in May and June, the river will open in July and September, and the geese will come in August and September, and the cattle will walk everywhere in September and September."

However, even in the first half of the coldest month 1 month in the southwest low-altitude valley area, the average temperature is still above 10℃. It can be said that autumn has gone to spring, and there is no winter all year round.