Everyone, thanks alot for the advises and opinions

Nowadays, my adult pom not bark anymore in midnight, my mom trained it by "NO", haha.. Next.. need to train my pom puppy as well

My dog, pomeranian always non-stop bark in the midnight, 2-3am.. No matter how i scold and bit it, it still the same..
It only stop barking when i come down from my room, once i off the living room light (it sleep in cage at living room) and go back to my room, then it start to bark AGAIN.

Someone told me tat just let it bark and it will stop after awhile, coz it know tat no matter how, owner oso wont "choi" it. But it is quite annoying since it bark in the midnight, the next day my family and i still need to work 

I duno whether it wan to sleep with me, coz sometimes i cant tahan it, then will bring it to my room. Then... it STOP barking.
Anyone can help me to solve tis problem? Thanks