1. Counterattack in a desperate situation, use your own power to protect your loved ones, change your destiny, break the shackles of feudalism, and live out your own self-worth (the core is "rebellion", growing from a concubine who is allowed to be slaughtered to a strong person who can control yourself and protect your home and country).
2. Good deeds and evil deeds are rewarded, and you will eventually be saved if you stick to your heart (the protagonist does not turn evil or kill indiscriminately, treat good people with kindness, and deal with evil people with sharpness).
3. Love does not know where it started, but only goes deeper (the heroine and the hero go from testing each other, using each other, to relying on each other in life and death, and walking side by side in the two-way redemption).
4. Classes can be broken down, and ability is respected (break the feudal prejudice that "concubines are inferior to others" and "it is virtue for women not to have talent", and rely on spatial ability and own wisdom).
