The Queen implies that she has obtained Wei Anning and Gong Ting's birth dates and consulted Master Huizhi, China's most reputable expert in such matters, about their marriage. If they were to get engaged on the 20th of this month, their marriage wouldn't last long. Two months later, however, there's an auspicious day that would dispel misfortune. If they got engaged then, they'd be together for a long time.
The Duke knows well that this is merely an excuse to delay the alliance between their two families. Otherwise, the usually skeptic Queen wouldn't suddenly decide to seek someone out to check their marriage compatibility.
Upon returning to the Duke Mansion, the Duke called Gong Zhen to convey the Queen's intentions. Gong Zhen, infuriated, hung up the phone. All the arrangements for the engagement had been prepared, yet a single word from the Queen was required for postponement, forcing them to comply reluctantly. The frustration they felt was indescribable.
