Tighten the expansion screws on both sides of the door frame to widen the door frame spacing. Use 1-3 cm thick long wooden strips to place the friction, close the facade, and slowly apply pressure to eliminate the friction. Adjust the hinge screws of the facade with an adjusting wrench, so that the clearance between the facade and the door frame is in the best position. You can apply butter to the worn part of the paint surface, dilute the worn surface, or spray self-drying paint with the same luster.