Mine did, I have the older 6x17 Gaoersi where you can only use the GG when there's no film loaded. Apart from checking the focus when I first bought the camera I've never used the GG since.

I use a 75mm on my camera 24/7, I have a 90mm focus cone & a spare 90mm lens but I never used it, so put the lens back on a 5x4 panel. I've never had a problem composing or with focussing, a 75mm is quite forgiving and has decent DOF.

Ian