Simplified Chinese:
* 秋季 (qiū jì): This is the most common and formal way to write "autumn." It literally means "autumn season."
* 秋天 (qiū tiān): This is another common way to write "autumn." It literally means "autumn sky."
Traditional Chinese:
* 秋季 (秋 季): This is the traditional Chinese version of "秋季."
* 秋天 (秋 天): This is the traditional Chinese version of "秋天."
Other possibilities:
* 仲秋 (zhòng qiū): This literally means "mid-autumn" and refers to the middle part of the autumn season. It's often used for the Mid-Autumn Festival.
The specific spelling you use will depend on the context of your writing. If you're writing formally, "秋季" or "秋天" are the most appropriate. If you're writing casually, "秋天" is more commonly used.