凍冬

 原來喺今日做冬

唔怪得天氣咁凍 

https://www.google.com/amp/s/health.tvbs.com.tw/amp/nutrition/326366

Winter SolstICE

The solar terms, based on the sun’s position in the zodiac. It was created by farmers in ancient China to guide agricultural affairs and farming activities. Winter Solstice, one of the 24 solar terms, is an astronomical phenomenon. The daytime is the shortest and the nighttime is the longest of the year.  

24節氣是根據太陽繞行地球公轉的位置而決定，最古老的時候，是由一群農夫發明的．而冬至是24節氣中，白天最短，晚上最長的一天。

https://www.yesonlineeng.com/tangyuan/