The night is already very deep, and the hustle and bustle of the city has been swallowed up by the dark night. City C, which is full of neon lights, is now silent, without any trace of dazzling colors. The wind blew through the glass of the office building and playfully penetrated into the few rooms in the entire building that still had lights on. Feeling the slightest chill, Yiyi shivered slightly and gently rubbed her shoulders with her hands. I muttered in my heart: "It's so cold." So I put down my work, walked to the window, stretched out my slender arms, and was about to close the window door. When I looked at the darkness outside, I couldn't help but feel a flash of loneliness in my heart.