I’ve Become The Villainous Empress Of A Novel - Chapter 20

Hm… So before she became empress, she was someone’s subject experiment? Either that, it says “rest in peace, offering, remember”
If it’s not subject experiment, then it’s gotta be that she was a happy child, but her parents was killed or smth, that would explain why her parents are almost non-existent in conversation on this manhwa.