What was royal poison in 'My Royal Nemesis' really made of?

In the ongoing fantasy rom-com series "My Royal Nemesis," Kang Dan-shim (Lim Ji-yeon), a royal concubine in the Joseon era, is forced to drink a bowl of poison. Blood spills from her mouth as she collapses to the floor — a scene familiar to viewers of Korean historical dramas. But in this story, death becomes a portal. Triggered by a shaman's spell, her soul awakens in present-day Seoul inside the body of Shin Seo-ri, a struggling actress who makes a living playing minor roles in period dramas.

By The Korea Herald