Buzzing electricity sound from light strip plus power adapter

Hi all yeelight users, I’m new here I got an issue that my light strip plus which is the newest V2 2m version has buzzing sound keep coming out from the power adapter. The sound exist whether the light strip turns on or off, the sound was there since the adapter plugged into the socket. The sound is very annoying when the surrounding is quite, pls help to solve this problem thank you!