I would like to ask my predecessors to know: should the height difference of 5 cm between the kitchen bathroom and the living room floor stay on the living room side of the partition wall or the kitchen bathroom side? ... What does it mean to stay there with a height difference of 5 cm? This is a puzzling question.

Best case: the doorstones of the kitchen and bathroom should be the same as the floor elevation of the living room. If the living room is a floor, it should be nearly 3-5 mm higher than the living room. The purpose of this is that the floor edge banding at the lintel should be lower than the lintel after installation, thus ensuring the service life of the edge banding.

The floor of the bathroom is about 5MM lower than the doorstone (called the water edge, which is inversely proportional to the size of the bathroom shower space). The larger the bathing space, the smaller the height of the water retaining edge).

The water retaining edge of the kitchen is small or not.