As the saying goes, "Family disgrace should not be made public." For someone else, Madam Wei might not have disclosed the scandalous affair of her granddaughter. But who is Song Ci? He is the one who informed her that something was amiss with Wei Cheng, and he knows exactly who Wei Cheng is involved with.
Now, the prospective bride has been replaced, and the reasons behind this change are bound to be scrutinized, causing further embarrassment. Madam Wei doesn't want Song Ci to think that she is sacrificing her granddaughter to save her grand-niece.
So, Madam Wei confessed. The change in the marriage arrangement was entirely because of her shameless granddaughter and her concubine mother's scheming.
Perhaps her eldest daughter-in-law also played a behind-the-scenes role in this plot, but regardless of the truth, Wei Wenyan's loss of reputation is real.
"In the end, is Wei Cheng someone who fancies men?" This was Song Ci's curiosity.