Thus, the two sisters came up with a rather cruel plan. But the two of them have to do this to make sure that Second Madam Yu would think twice before doing the same thing to Yu Tong again. They could not afford to let Second Madam Yu force Yu Tong into another marriage match.
As neither of them could act roughly with Second Madam Yu. If Yu Tong was to refuse the orders of Second Madam Yu then the latter could always blame Yu Tong for going against her and there was also a chance for Second Madam Yu to sue Yu Tong for being unfilial. What was more, Murong Si's life would be in danger if they were to act too stupidly.
If Yu Tong was to make a ruckus when she was drunk, no one would take it seriously. At most, they would laugh at her and then forget it, after all, who would take the words of a drunkard seriously? They would only think that it was nothing but a drunkard's drunken ramblings.