单选题
请阅读下列短文并回答：这是中国传统文化中的哪个节日?______
It is one of the
Solstitial days (Solstice is the time of either the longest day in the year or
the shortest day in the year) it is a time for the family to get together. One
activity that occurs during these get-togethers (especially in the southern
parts of China) is the making and eating of dumpling (especially in the southern
parts of China), Tangyuan or balls of glutinous rice, which symbolize reunion.
The orgins of this festival can be traced back to the yin and yang philosophy of
balance and harmony in the cosmos. After this celebration, there will be days
with longer daylight hours and therefore an increase in positive energy flowing
in.