Purple Jade was describing what had happened to her in the palace last night, while Wufu lay soaking in the bath barrel with her eyes closed, thinking about where exactly she had been tricked.
It couldn't have been at the start of the Imperial Banquet—that would be too conspicuous; the only best time to act was midway.
Midway through, Lady Wan came over to toast her, apologizing on behalf of her daughter. Wufu hadn't used her own cup, but took another one…
The wine was the same wine, but the cup was not the original one; there might be a problem there.
Also, Lady Wan leaned toward her and knocked over the cup in her hand, causing the wine to spill on her skirt. Seeing her flustered and embarrassed expression, it didn't look intentional—more like an accident. But whether that "accident" was truly accidental or man-made was hard to say, because once wine stained her skirt she would certainly have to change clothes; otherwise it would be improper in front of everyone.
