What does it mean to say that people are stupid and sweet?

Silly white sweet, a popular online vocabulary, refers to a beautiful, gentle and sweet love story, which generally does not spread dog blood, although the bridge is a bit old; Or it refers to the heroine in this love story, who has no heart and even a little white personality, but is cute and lovely, making people feel very warm. From the TV series "Late Arriving".

Silly white sweet has two meanings. It refers to a beautiful, gentle and sweet love story. Although the bridge is a little old, it generally doesn't spill dog blood. The other is the heroine in a love story. She is heartless and even a little white, but she is very cute and makes people feel warm.