A blood-based contract begins, a revenge that burns the heart with hatred. The noble daughter of the Xie family, Xie Tangzhuo, was once as bright as a flower, and was imprisoned in a cold cage carefully built by the regent Xiao Jue, just to flatten her pride and pay the vague "ancestral debt". The extreme humiliation and deprivation reached its peak on a midwinter night - Xiao Jue personally labeled their child in her belly as a "debt", and his cold words turned into the sharpest blade in the world. That night, the hosta was stained with blood, the snow swallowed the baby, and the fierce woman burned with love. After five years of hibernation, she was reborn through blood. The daughter of the Xie family who returned has become the "blood phoenix" who has broken through mountains and rivers and made the royal court in the north tremble. When her iron hoofs crushed the old king's flag, the man who had tortured her with the cage and the wind and snow was left in plain clothes, kneeling in the snow and holding the ice box that was so cold that it penetrated the bones. In the box was the evidence of regret and despair that would never be reborn. A humble prayer tears apart the past: "General... Can you sew... This flesh and blood... Back together?" Is it atonement? Is it a rekindle? Or a deeper purgatory? The snow is burning, but the blood will eventually pay off.