Forty-Nine Paper Plane

In his freshman year of high school, Zhou Nian met Gu Shi'an. He was the most silent person she had ever seen - he was deaf in his left ear and walked alone, like a ball of ink that could not be dissolved. But she knew his secret: he would put a candy in the palm of her hand, fill in her footprints one by one, and say, "My world is too quiet, but your presence makes it very noisy." In her senior year of high school, she folded forty-nine paper airplanes on his classmate list. The fiftieth one never fell down. When they reunited seven years later, he was a young scientist and she was an intern reporter interviewing him. At the end of the interview, he took out fifty paper airplanes from the drawer and said—— "I'll replace the one you missed." ——It turns out that he has been waiting for her for the past seven years.