It means to get a divorce. If you don’t get a divorce, other things may happen. This sentence means that your wife is no longer the same person as before. In your horoscope, the day branch represents your In the Wife Palace, it is this earthly branch and your Sun Pillar that cause some so-called punishments, clashes, breakdowns, and harms in Yixue. It’s not good for you. Anyway, it just means getting married for the second time.