从木马来邮局的那天夜里算起，五天快要过去了。第五天的傍晚，老局长接到一封请邮局转交的厚厚的信。信封上面，用整整齐齐的字写着：亲爱的木马收。老局长不让任何人看见，悄悄把信塞进自己的衣袋。真的有一个叫“山口伊作”的人！那么说，那天夜里发生的事，并不是一个梦！ From the wooden horse to the post office that night, five days are almost over. The evening of the fifth day, the old director received a thick letter from the post office. Envelope above, with neat words: dear trojan received. The old director not let anyone see, quietly put the letter into his pocket. Really there is a man named “Yamaguchi Iraq made”! So, what happened that night is not a dream!