So, why was Ming Wei there ? Looks like those two are plenty ready to keep an eye on each other.
Love it, two couple's worth of comedy to look forward to, plus the shenanigans between Qi Nian / Tan Tailan and Yu Dingdang / Ming Wei.
My guess is that "FINE, I'll marry somebody, now stop bothering me about it!" was the entire extent of the plan.
She didn't even think of how to get through the first night, and had to improvise. I wonder how long that girl will manage to keep her crafty empress in the dark.