Keeping Watch (2007)

Keeping Watch 2007 / 沉睡的青春 2007 / Chen Shui De Qing Chun

The sudden arrival of Han provides a diversion from Ching's monotonous life as the proprietor of the family clock shop. She quickly falls in love with the young man who claims to be her high school classmate, but her bliss proves short-lived as he disappears just as abruptly. Worried, Ching calls Han's parents, only to be told that he died many years ago.