According to the custom of China people, a woman who has just lost her spouse is called a new widow. In general, a widow who has been widowed for less than a year can be called a new widow.
According to folklore, during the period less than one year after the death of someone in the family, it is not allowed to drop in, wear bright clothes and pay a New Year call. If you have something to call or talk about, you should call and make an appointment to meet outside. Any family will avoid visiting someone in their family less than a year after a person's death, and even keep a low profile, don't post couplets, don't hang red lights and so on during the New Year.
There is a dead man in the new widow's house, who has been dead for less than a year. The new widow should be filial at home and attend other people's weddings during her filial piety. People will think that the happy event will be unlucky, and it will be unlucky.
It is a thankless job for a new widow to attend someone else's wedding.