Four years. To everyone else, it was just a simple number. But for Ye Chuxia, it was the deepest wound in her heart. Four years had passed, and though it no longer hurt as terribly as before, she knew it was still there, throbbing faintly. She couldn't forget the man named Xiang Munan. She gave up everything and returned to China, only to meet a man with a face identical to Xiang Munan's: Xiang Mubei. What kind of connection will form between them? Could two people in this world really look exactly alike?