The puppy always barks at my balcony

You have a great sense of humor

But you know what?

Animals can see things that we can't see.

Maybe he's playing.

Hehe, you think too much, and when the puppy is old, it won't bark when you hit it. That's in the game.

Don't believe this, it's just that the puppy can't adapt to the new environment at once.

Don't be cranky, it may be that there is an airplane outside the window, someone or some animal passing by, the dog will be more nervous, or the light reflected from the window makes the dog nervous, just close the curtains. My dog often runs to the window at night and whispers "roaring" twice, sometimes someone passing by, sometimes opening the curtains to see that there is nothing.

He just doesn't know what's in that place, so you bring it over and let him smell it and get familiar with it, and he'll be fine

It's so strange that you add a dog! Lock it up with a dog leash.