the clear waters of rivers and lakes during autumn

bright and clear eyes like autumn water, usually describing those of a beautiful young woman; often used with 望穿秋水 wàng​chuān​qiū​shuǐ

the cold, flashing light or glint of a sharp blade or treasure sword

the name of a chapter in the classic Daoist text 庄子 zhuāng​zǐ

a metaphor for a clear and bright complexion or spirit