The reason for the design of double-layer embedded ceiling cabinets:

Double the storage function!
Most household kitchens are stored on hanging cabinets and floor cabinets. Regardless of the size of the unit, the storage space in the kitchen is the same. A friend's kitchen is already small in size, and ordinary cabinets can no longer meet the storage requirements. Therefore, the designer thought of adding hanging cabinets on the next floor below the hanging cabinets, forming a nested hanging cabinet layer by layer, which does not occupy any space and also doubles the storage function!
Higher security!
But with the advent of double layered nested cabinets, the height of the double layered cabinets lowers the height of the cooking area. For those who cook, they may have to bend over to cook. Sometimes, if they are not careful, they can easily bump into each other, posing a safety hazard.
So before designing such a double layered nested cabinet, the designer shortened the depth of the embedded cabinet by 8 centimeters, which not only did not affect the normal storage function but also solved the problem of collisions!