Starting from the electrical box, draw several routes: Line 1: electrical box (leakage switch)-TV cabinet-container-cashier, three cores, 2.5 square copper wire, and special line for socket. Line 2: electric box (leakage switch)-container-showcase, three cores, 2.5 square copper wire, and special socket wire. Line 3: electric box-TV cabinet-container-cashier-post, two cores, 15 square copper wire, special electric light wire. Line 4: Electric box-container-showcase-right in the center of the room, with two cores, 1.5 square copper wire, which is a special electric light wire.