· "Half Dream": The memory fragments in Lin Shen's mind that do not belong to him flashed like a dream - the moonlight on the coast of Shonan, the miso ramen in Kobe, the song called "Try to remember"
· "Half-awake": He clearly knows who he is - Director of the Cardiology Department of Nanjing Drum Tower Hospital, a doctor studying in the United States, and a once promising young expert
·Double metaphor: It is both Lin Shen's state and Dai Mengyao's situation - she knows that she is facing another person, but she always sees the shadow of her lover in him
