纸婚 is a Chinese term for the first wedding anniversary, literally 'paper marriage'. It follows the traditional anniversary naming system where each year is associated with a material — paper for year one, cotton for year two, etc. You can use it in phrases like 纸婚纪念日 ('paper anniversary') or 庆祝纸婚 ('celebrate the first anniversary'). The concept is similar to Western anniversary gift traditions but is a fixed cultural label in Chinese.