"Outing".

1. According to the QQ Music official website, "The blue sky is long and the white clouds are soft" is an excerpt from "Let's go, let's go, let's hold hands, walk, go, go, go for an outing together. The white clouds are long, The sun is shining softly, the green mountains and green waters are beautiful. Let’s go walking, holding hands, walking and walking together.

2. "The blue sky is soft and the white clouds are soft" is written by Yu Chengqing. The lyrics of the song "Outing" are from Yu Chengqing's album "Ha, Baby, I'm Coming". This song depicts blue sky, white clouds, green mountains and green water, showing beautiful natural scenery.