Short dramas built around a strong female lead flip the usual dynamic of the format. Instead of waiting for a powerful man to notice her, the heroine is the one with power, or the one who takes it. She might be a surgeon, a CEO, a martial artist or a divorced wife who walks out of a bad marriage and builds an empire. Plenty of these series still have a romance, but the love interest is a partner or a reward, not a rescuer.
Viewers like these heroines because they act. When someone insults her, she answers on the spot. When she is framed, she gathers the evidence herself. That decisiveness suits short episodes, which need a turn in every scene, and it makes the inevitable confrontations with cheating husbands and scheming rivals especially satisfying.
A strong female lead is not just a heroine who is rude to everyone. Lazy series confuse coldness with strength, or hand her a list of talents without ever showing her use them under pressure. The good ones give her flaws, doubts and a clear goal, and let her make mistakes she has to fix. They also resist the late twist where she suddenly needs saving, which undercuts everything that made her worth watching. Look for stories where her competence drives the plot rather than decorating it.