As a modern person, I still can't believe that such a clichéd plot of time travel has happened to me. However, other heroines have cheats, whether they have some magical system or some special skills.
A combination of medicine and poison?
No
Extremely smart?
Sorry, who are you talking about?
Reciting poems and composing them correctly?
There is no such skill. . . .
As a "free gamer", how can we at least survive in this era?
Hug the thigh
Concept: In an unfamiliar environment after time travel, the heroine uses her own wisdom and hard work to stand firm.