Words describing the blue sky

Blue sky: a light blue sky. The blue sky is as clear as washing. Describe sunny weather.

Source: Song Ganyuan's "Water Tune Song Tou" words: "Wan Li's blue sky is like washing, it is very bright in the cold, and the curtains are rolling in jade waves."

Sunny weather: sunny. Describe the clear sky and fresh air.

Source: Wang Jinxi's Preface to the Orchid Pavilion: "It is a sunny day, the sky is high and the clouds are light, and the wind is beautiful. You can look up at the vastness of the universe and overlook the prosperity of various categories."

Clear sky Wan Li, blue sky, sapphire blue.