The hostess lives in a hotel.

I am also looking for this novel. The woman seems to be surnamed Su, a daughter-in-law, but her father brought her a sister. The woman hated her sister and once accidentally pushed her sister down the stairs in an argument. Later, she was exiled to France, and she returned to China because her half-sister wanted to get engaged to her childhood.

This woman met this man on the plane back. That man is so cold and handsome, and he is also an overbearing president. After getting off the plane, the woman lived in a hotel suite. Because she drank a lot of wine, the man thought someone had prepared an appetizer for him to sleep.

The novel begins like this. I'll take another look. I can't find it.