What's the meaning of a blue puppy?

The blue puppy should be a "green puppy", which means: a young, innocent and lovely sunshine boy who has not been wet behind the ears.

Extended data:

Little suckling dog, a network term, comes from the classification of boys by Japanese girls. It refers to puppies that have not been weaned, and now it refers to young, clingy, lovely and sunny boys.

Word source

Puppy dogs were originally classified by Japanese girls for boys. Dog boyfriends like to play outside, like to deal with others, and can express their ideas sincerely and frankly. Physical education is better than academic performance.

20 17 12, the simple clingy little suckling dog boyfriend became popular in the domestic network, and the long-standing type of little German shepherd boyfriend officially formed the concept of dog boyfriend. On the one hand, it is a little suckling dog and a little German shepherd whose popularity is soaring, and on the other hand, it is a middle-aged man who is rejected by people.