LA FAN QIE ZHI XING

At the end of the story, the Demon Lord, who was in the form of a dragon, was killed by the heroine. There was only one step left to let the world return to peace: to seal the soul of the Demon Lord. If the seal were to fail, then the returning Demon Lord would summon the fire of hell to burn the entire world. Only when the heroine would offer her most cherished treasure of her life, the seal would be finally completed. The treasure would not be taken away, it would only summon the power of the seal and give the heroine a new life. The heroine sacrificed all her "treasures", but neither her sword, her comrades, her lover, her king, her fellow men, nor even her property could summon the power of the seal. So the heroine thought of her daughter, who ran away years ago... Could her daughter be her treasure? What exactly would be the treasure to the heroine?