It sets the tone of sadness. The dark night, the blue bar lights and the crowded and narrow space are typical elements of Wong Kar-wai's films. In such a narrow space, Wong Kar-wai once again freely shows the delicate inner world of the characters. It's still a love story between a man and a woman, and there will still be a third party in the middle. "Extramarital love" seems to be the eternal theme of Wong Kar-wai's films. He loves to shoot and the audience loves to watch, all because of its delicate emotional expression. The story begins with Elizabeth proposing to Jeremy in a bar. She is looking for a boyfriend with feet on both sides. A woman who is betrayed by her boyfriend is always sad. Faced with the key that her boyfriend left in the bar, Elizabeth chose to refuse. "Each set of keys has its own story." This is what Jeremy told Elizabeth. "For example, this set of keys, the couple thought they could be together forever, but in the end they didn't come together." Wong Kar-wai is like a poet. The language in his works is always poetic, and there are always many dialogues that will become classics. These conversations are extremely concise and extremely sad. Wong Kar-wai's language is somewhat similar to Haruki Murakami's novel writing, which is "naked", quite clean, but full of charm. "If I had an extra ticket, would you go with me" in In the Mood for Love is a typical example. In the first paragraph of Blueberry Night, we can also see the shadow of Zhou Muyun. Jeremy in the first paragraph is very similar to Yun, especially when Jeremy hugs crying Elizabeth at the end of the first paragraph. The typical Wong Kar-wai scene and even the background music are the familiar theme soundtrack of Zhou Muyun. Faced with betraying her lover, Elizabeth chose to leave new york and started her own journey, away from these heartbreaking stories. When she left, she left the key with the story written on it. "When I was seventeen, he stopped my car." Arnie's death was a complete tragedy. He died unjustly and flatly, so his death had a great tragic impact.