He Yuqian and Lin Wan had gotten to know each other after that. He Yuqian was a university lecturer. Whenever he thought Lin Wan's mind was drifting, he got concerned.
Three months ago, Lin Wan landed at Sucheng Central Park Station. Everything around her had been so unfamiliar. She remembered her address and a string of passwords to a door. However, she didn't know how to get there. Fortunately, she met He Yuqian.
"Yuqian, are you free tomorrow? Can you come with me?" said Lin Wan. "To prove to you that I am not going crazy, I will tell you how he looks, and you can see for yourself tomorrow."
Lin Wan turned on the recording function on her phone. "He's about 1.83 meters tall, he is thirty-eight years old, and his face is similar to yours. His skin is quite fair, and he doesn't talk much. I knew him for many years, but I never had a good long chat with him. He used to call me Lin Wan, but I don't know why he called me Wanwan today."