Return of Nirvana's Daughter of Gold and Poisonous Concubine

In her previous life, Shen Qingyue, the legitimate daughter of the Prime Minister, was framed by her stepmother and concubine. She was tortured and killed after marrying into the Houfu. After being reborn as a child, she seeks revenge step by step, but forms an alliance with the sickly prince Xiao Jingheng. The two work together to uncover the dynasty's conspiracy. In the process, they use each other to truly love each other, and finally smash the villain's conspiracy, and the heroine becomes the first-grade wife.