"Teacher, are you awake? I made dinner, shall we eat together?" "Who are you?" "My wife, Lan… but… she's not doing too well today… it's really bad." This woman, Lan, told me that I had an accident three months ago and lost my memory. Moreover, my symptom is that upon waking, all my memories are reset; every morning when I wake up, I'm back to a state where I can't remember anything from the previous day…