Are you asking what song to accompany the blue sky and white clouds post on WeChat Moments? It can be paired with the songs "Blue Danube" and "City in the Sky".

Songs with blue sky and white clouds usually mean that the theme or lyrics of the song are consistent with the beautiful weather and natural scenes. Common songs with blue sky and white clouds include "Blue Danube", "City in the Sky", etc. The lyrics or melodies of these songs all form a musical echo with the bright blue sky and white clouds, making people feel relaxed, free and calm.