Eternal Life: My Little Husband

After accidentally eating an immortal herb, Lu Ling'er falls ill with a cold poison and must use Shen Yan's pure yang body as a medicinal guide in the Republic of China era. Initially resistant, Shen Yan makes a pact to save his mother and falls in love with her, eventually sacrificing his life to protect her. Discovering Shen Yan is the blood bond person who can help her escape immortality, Lu Ling'er travels to modern times and finds Shen Qian, Shen Yan's reincarnation, within the Shen family. Using her identity as the family's founder, she stays to teach Shen Qian while countering the schemes of the four clans, including Duan Yuntian, who seeks eternal life and spreads disease for profit. Lu Ling'er unites with Meng Liang and others to fight back.