I've been reborn, who would still raise a son from another family? Go away

Liu Yueru didn't know until her death that her twins were killed by the man beside her. One was thrown into a mass grave when she was still in swaddling clothes. The other lived to be six years old and was poisoned by the Marquis's mansion. Since then, she has been seriously damaged and can no longer get pregnant. Her husband sent her a concubine's son to raise, and lied to her that the child's biological mother was dead. She raised her adopted son to be a talented person. When her adopted son passed the imperial examination, her husband changed his face. The cousin she sent out of the Marquis's mansion in the past is now lying in her husband's arms, and the adopted son respects her as his mother. Her husband Song Nanzhi vomited out the mystery of the twins' life experience with disgust. It turns out that her children are not of the Song family blood, and everything is a conspiracy! Once reborn, her biological son is still alive, look...