Your Highness, Princess Liang Has Been Kidnapped Again

[Both leads are inexperienced + sweet romance + wish fulfillment + alternate history + powerful male and female leads] Jiang Yining was a graduate student in chemistry. After accidentally traveling through time while watching a meteor shower through a telescope on a rooftop, she transmigrated into the body of a courtesan with the same name. Even if a prince kept her, teaching someone to fish was better than giving them a fish. She started by making skincare products and gradually broke into the palace market. It wasn't illegal to make biological weapons in ancient times anyway. Maybe she should give it a try. They wanted her to be a maid? Eight to five, weekends off, and absolutely no overtime! They wanted her to be a princess consort? Take me to war. I'm an explosives expert! They wanted her to betray her country and collude with the enemy? Hold on. I have other uses for that pig brain of yours!