When they left the room Zhao Wei looked at the emperor seductively and asked:
"Your majesty, may I speak with you?"
The emperor nodded and they walked to his imperial study. When they passed the emperor's chambers Zhao Wei looked back feeling lost. She thought she was more than clear, she wants to sleep with him.
Yizhen knows very well what she wants but he has no intention of laying a finger on her. Since she's been his consort they never had any relation.
They both know what they are to each other so neither insisted on being intimate.
Zhao Wei was more than pleased with that, she thought the emperor loved her too much to pressure her into doing something she didn't want to do.
When she thinks about it now and all the time he showered her with presents she feels touched. She can't understand how she could love Liren and not him.