Correct
秋分
/ qiūfēn /
Strokes
Definition
Qiufen or Autumn Equinox, 16th of the 24 solar terms 二十四节气 23rd September-7th October
Example
As a Noun
Autumn Equinox ［beginning of the 16th of the 24 solar terms］
As a Noun
Autumn Equinox Day ［falling on Sept 22, 23 or 24］