I Transmigrated into a Marquis's Household and Put Huge Gold Bangles on My Best Friend

Ouyang Zhizhi accidentally transmigrates into the past after a car accident, becoming the wife of a marquis in ancient times. Using the space in her yin-yang fish pendant, she establishes contact with her best friend, Ni Xiaoduo. They exchange messages and supplies, help each other thrive, and work together to build wonderful lives of their own.