How Did I, a Villain's Favorite Concubine, Become Empress?

[Not a devoted-only romance; light palace intrigue early on, with a focus on everyday life]

Just after transmigrating into a book, Shen Zhao kicked Song Xun right off the bed.

She thought she was sure to lose his favor.

Faced with an aggressive princess consort, an unpredictable prince, and other concubines with ulterior motives, Shen Zhao simply decided to lie flat.

Only she knows that Song Xun, the villainous prince, is headed for a terrible end.

The new emperor hates Song Xun so much that he smashes even the stone lions at his gate and pulls up every tree in his courtyard, to say nothing of the man himself.

So why compete? Why fight? In the end, everyone becomes a handful of dirt anyway.

Eat when there's food, drink when there's drink, and make a fuss when the mood strikes.

She gives up trying.

But as she lies low, she becomes Song Xun's beloved concubine.

Then she becomes his favorite consort.

When Song Xun presents her with the imperial seal, Shen Zhao still can't make sense of it.

How did I, a villain's beloved concubine, end up becoming empress?