What do you mean that a person has yin and yang?

Describe a person's capricious personality.

"Cloudy to sunny" generally means that the weather is changeable, sometimes cloudy and sometimes sunny. When used to describe a person, it means that this person is capricious, sometimes indifferent, sometimes enthusiastic, or inconsistent in behavior, which makes people feel unpredictable. It can also be described as a human form that allows people to be sinister and change their means to deal with people.