According to the traditional custom of our country, pasting couplets is a kind of folk custom in our country. Generally speaking, it can be torn off, but it is not recommended. Because couplets are more festive, it is best to wait until after the fifteenth day of the first month, or wait until the next year to post couplets.
There are no clear and strict regulations on this, mainly depending on personal needs and local customs. However, couplets during the Spring Festival are an auspicious performance. From the perspective of Feng Shui, couplets symbolize auspiciousness. If you tear it off at will, it will affect the development of your personal fortune.
If the couplets at the door are damaged all year, it is best to repair them in time and tear them up in the new year, which means to bid farewell to the old and welcome the new. At the same time, couplets also mean to ward off evil spirits. If it falls off naturally after the new year, it can be torn off directly.