The marriage of Imperial Censor Zuo was decreed by the Emperor, and the bride was also a noblewoman of distinguished lineage. However, on the night of the wedding, she claimed she was menstruating. After that, she came down with a cold. The nuptial night kept being postponed, which aroused Imperial Censor Zuo's suspicions. Consequently, he arranged for someone to monitor his newlywed wife around the clock, and he eventually uncovered her major secret.
Upon learning the truth, he was furious, but since the marriage was commanded by imperial decree, he was unable to complain on his own behalf. He was a man of the Crown Prince, and the Crown Prince was always very cautious and careful with his people, so he too became aware of the matter. When he learned that Prince Zhao and his own brother were vying against each other, he gave Yan Qing a hint.
