Is Butterfly Dance in the Yellow Sea an idiom?

Butterfly dance in the Yellow Sea is an idiom.

The Yellow Sea Butterfly Dance describes the way the rapeseed flowers form a sea of ??flowers when they bloom, resembling a group of dancing butterflies.

The yellow color of rapeseed flowers is usually described by words or phrases such as:

Yellow sea butterflies dance, the yellow color is pleasant, the color is striking, the fragrance is intoxicating, the fragrance is refreshing, and the golden color is , light and fragrant fragrance, bees swarm in, butterflies dance for them, flowers are in abundance, butterflies are in chaos, golden and yellow.

Sentences describing rapeseed flowers: In the spring season, the rapeseed flowers in the fields are in full bloom, dyeing the mountains and fields with golden yellow, forming a golden ocean. Rapeseed flowers grow in winter and bloom in spring. As soon as spring comes, they try their best to grow upwards. Rapeseed flowers rarely grow alone, but always bloom in large patches.