He is Lovestruck in the Revenge by Gu Nanxi

In the heart of the capital, a solitary nurse finds solace in her quiet routine at a palliative care unit, where every day blurs into the next. Living in a rundown yet nostalgic neighborhood, she maintains a fragile connection with a kind shopkeeper while avoiding the outside world. Her life takes a turn when she notices the mysterious Ruyi Pawnshop across the street, owned by a wealthy man rumored to be reclusive. As she tends to a terminally ill literary scholar, she unwittingly steps into a world of grandeur and strict expectations that contrasts sharply with her own. With her small apartment adjoining the pawnshop, she begins to uncover the entwined fates that bind her to the enigmatic owner. Amidst the backdrop of grief and healing, secrets from her past emerge, revealing connections that could alter the course of her life forever.