A Lifetime of Redemption, No One Saves Me

When a solar flare engulfs the galaxy, Earth barely survives, but the Moon is destroyed. Humanity initiates the New Moon Project, building an artificial moon to stabilize gravity, and survivors move into a strictly regulated underground base. The base's laws are harsh: only those without a criminal record can settle, couples must marry within the same job, and children inherit their father's profession. Class divisions are rigid: the lower class subsists on synthetic liquid food, while field workers enjoy quality rations. Each field worker has one chance to bring a surface refugee underground. Bai Xi was abandoned by the Chen family at birth and adopted by field worker Bai Chengxu. Her adoptive father taught her to be kind, but he died in a mission protecting her. Bai Xi used her precious quota to save the dying Si Yuan, not knowing he was dark-hearted, jealous of her possessions, and after marriage he abused and tormented her. Meanwhile, her biological parents, who abandoned her, came looking for her. Her younger sister Chen Hua is chronically ill and the family is in debt; they constantly harass Bai Xi, forcing her to donate organs and repay debts. Trapped in a false marriage and cold-blooded relatives, Bai Xi adheres to her adoptive father's last wish and repeatedly risks her life to save others. In one rescue operation, she successfully saves her teammates but returns alone to search for trapped people in a dangerous building, which collapses. She spends her life saving others with kindness, but no one ever reaches out to save her. Death is her only escape from all suffering. — Description from novelcodex.org