gwennie call:

So, is it the same as the drama? That is, it was all a dream? Or did she really go back in time?

Yes and no, since they changed the ml's background. He was actually an emperor in the novel but in the drama he is a incense successor and his mother is from the palace.

In the drama if i remember correctly, she actually didn't go through the whole thing, it was just a dream and she was saved from the ml. But in the novel she lived with the bodyguard if i remember correctly.

And you can understand from this video maybe better also: https://m.youtube.com/watch?v=Q1BrSkw63lw