1. Hang the main frame vertically on the door frame or wall, keeping it vertical and horizontal.
2. Determine the hanging point position of the auxiliary picture, and mark the corresponding position below the main picture.
3. Nail a hook or hanging ring at the marked position below the main drawing, and ensure that it is on the same horizontal line with the hanging point of the main drawing.
4. Hang the sub-painting on the hook or hanging ring, keeping it vertical and horizontal.
Pay attention to the stability and safety of the hanging points when hanging the primary and secondary vertical drawings of greetings, and the hanging points should be firm and reliable to prevent the cloth from falling or being damaged.