The Outcast's Modern Bride

Serena Sullivan falls into a well, waking as a merchant's daughter. She is forced to be a concubine for a mad, abandoned son of The Duke's Manor. On their wedding night, she blurts out "Palace Jade Nectar Wine," and he replies, "One hundred and eighty a cup!" Realizing they are time-travelers, they team up to make money, opening a restaurant. They become the wealthiest couple, turning The Duke's Manor upside down.