Calligraphy, what is written on this fan? ...

It should be "Spring and Autumn, clear skies, mountains and rivers, including the brightness". Read from right to left. It means that most of the spring and autumn are sunny, and the mountains and rivers are clear and beautiful, which makes people linger.

"Sunny days in spring and autumn" can sometimes be written as "sunny days in spring and autumn" or "sunny days in spring and autumn".

"Mountains and rivers are full of splendor" comes from Xie Lingyun's poem. Light climate change, clear mountains and rivers. Qing Hui can entertain people, but wanderers forget to return. It's still early from the valley, and it's too late when the boat gets on board. The Woods and valleys gather in the evening scenery, and the sunset clouds float in the night sky. -Xie Lingyun

I hope I can help you! !