Describes people as being very fickle. "A face changes faster than the sky changes" is a common saying in our daily life. The sky sometimes changes very quickly, but if the face changes faster, it highlights the rapidity of the face change. The main meaning is to describe people who are very fickle. Weather refers to the specific state of the atmosphere close to the earth's surface in a certain area in a short period of time, while weather phenomena refers to various natural phenomena that occur in the atmosphere.