The CEO's Substitute Wife

Vivian Yu substitutes for her cousin to marry into the Landon family. She discovers her husband, Tristan Landon, is the boss of the Herbal Medicine Factory, and they keep their marriage a secret. Vivian has disagreements with her cousin, Tanya Yu, at the factory, but Tristan defends her. As they spend time together, they develop feelings. They argue with Tanya, and Tristan protects his wife, strengthening their relationship.