Extended data:
1. When hanging characters on the wall or calligraphy is ok, you can use a picture hanger. Picture hanger is a brand-new concept, which adopts many unique methods, and replaces the traditional hanging mode of thumbtacks with a novel, concise and beautiful hanging mode.
2. The traditional way of hanging calligraphy and painting and hanging artworks is to nail nails directly on the wall, and once you want to change places, you have to nail them again. The original nail left a hole, and the new nail easily made the wall flower, which greatly affected the appearance.
References:
Baidu encyclopedia-picture hanger