The First Book by Like Water, Like Tea

After years of striving in the workplace, a modern career woman decides to take a trip on a whim. Before setting off, she accidentally discovers that her family's ancestral bracelet is actually the key to unlocking a space. From then on, the trip takes on a whole new meaning. But when she returns, ready to begin the next chapter of her career, a thunderstorm sends her back 75 years to a parallel world. With no family to rely on, she uses her intelligence and wit to play the fool while secretly outsmarting her rivals, and begins a very different life in another time and place.

A low-key young master of a distinguished family transforms into a warmhearted big brother and starts raising a girl? Well, he's handsome, so he can do whatever he wants.