用英語介紹重陽節：Double Ninth Festival is a traditional Chinese Folk Festival, which is held on the ninth day of the ninth lunar month every year.?
The number of "Nine" is Yang in the book of changes. The two Yang numbers of "Nine" are equal, so it is called "double Yang"; Because both the sun and the moon meet nine, it is also called "double nine".
重陽節，是中國民間傳統節日，節期在每年農歷九月初九日。“九”數在《易經》中為陽數，“九九”兩陽數相重，故曰“重陽”；因日與月皆逢九，故又稱為“重九”。