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He watched the train bound for Beihai go away. Amidst the squeaking sound of the rollers, he waved his arms high and shouted goodbye to the people in which car. The slowly exhaled steam shot straight into the sky and mixed with the white clouds until it disappeared. He didn't come back to his senses until the rear of the car disappeared from sight, and suddenly rushed to the edge of the platform, opening his mouth to shout something. But in the end he lowered his head and spoke in a voice so soft that only he could hear it. Goodbye, Xie Xiaowei.