Tan Yilan transmigrates into a cultivation novel and becomes the male lead's... sword.
As the male lead's cheat, she isn't an ordinary sword, but a divine sword left behind by an ancient great cultivator.
Unfortunately, the pampered male lead is beyond saving. He has no ambition and spends every day eating, drinking, and having fun, even using her to chop vegetables and firewood. He is absolutely determined not to practice swordsmanship.
After trying every way to persuade him, even tempting him with a manual of divine sword techniques, Tan Yilan gets so furious that she decides to run away.
But then the male lead is reborn. He immediately drops to his knees before his sword and refuses to get up. After that, he falls asleep every night holding the divine sword, saying, "From now on, this sword alone has my heart."
Tan Yilan thinks, Oh no, oh no. The male lead must have been possessed, or he's gone completely mad.
But the male lead becomes obsessed with swordsmanship and trains hard every day, his cultivation advancing by leaps and bounds. Tan Yilan, who thought he was beyond hope, is left utterly stunned.
In her previous life, she became a sword spirit and stayed by his side after everyone had turned against him. With her true form in one hand, she slew countless demons, while the other dragged him out of the snow-covered Buzhou Mountain. Even in their desperate hour, as the pillar of heaven broke and the cords of earth snapped, she never abandoned him, no matter how battered she was.
Yet he gave her to someone with sinister intentions. His self-righteous attempt to protect her ended up getting her killed.
In this life, I won't spare anyone who harms her.
The male lead is reborn; the female lead regains her memories of her previous life later; the male lead chases his wife to the crematorium; one-on-one.
Theme: Be self-reliant and optimistic about life.