You can see the living room and balcony when you enter the door. I heard that feng shui is not good. Is it okay to install glass sliding door between the balcony and the living room?

It is no problem to see the living room when you enter the door, and the door is facing the balcony. It is no problem to make a porch or put a grating at the door. It is ok to install a glass sliding door between the balcony and the living room, which requires that the glass can't be transparent and can't be opened frequently, so the best way is to put a grille. The guardrail on the market now is still very cheap.