Forgotten Title Historical chinese

A novel with a female protagonist that is kidnapped from a brothel and sold to the imperial harem as a maid, there she resolves the case of the mysterious disease that is killing the babies, the mother's cosmetics are poisonous.
She is obsessed with medicines and tries poison on herself to find how to cure it.
She is the daughter of a prostitute and the prime minister.

 

Kusuriya no Hitorigoto

 

maybe Kusuriya no Hitorigoto

but it's Japanese novel

 

Yep, thank you. I wasn't sure if it was chinese or Japanese