One marriage contract, two identities.
In public, he is Professor Lu, the strictest person in her life. In private, he is her contract partner, playing the part of a loving couple.
They agreed to keep things transactional and leave feelings out of it.
But when academic slander and a family crisis strike at the same time, he realizes he has already fallen for her.
When the rational man, eyes red, begs, “Don’t go,” she looks at him calmly and says:
“Professor Lu, you can solve countless equations. But can you tell whether this is an act, or genuine feeling?”