Moonlight S01 E01 Her 'Face'

Fang Min, engaged to Fei Ming Xuan, suddenly proposes to end their engagement. At the same hotel, another Fang Min appears. It turns out, the real Fang Min has eloped with her first love, Tang Song, leaving her stunt double, Su Xiao Xiao, to call off the engagement. After some digging, Fei Ming Xuan uncovers this and decides to see through Su Xiao Xiao's act to find the real Fang Min.