张山到某局上班了。找准位置某局的办公大楼气势恢宏。每天上下班,电梯升降的时候,那种飘飘欲仙的感觉,让张山或多或少收获了一种成就感。张山爱观察,他发现上下电梯的人表情各异,有的一脸严肃,有的一脸从容,有的一脸疲倦,有的则是表情全无。当然也有微笑的时候,那就是电梯里突然出现了局领导,于是大家脸上瞬间都堆满了笑容,而领导则是很有涵养地点一下头。时间久了,张山发现一个规律:每次电梯挤满人的时候,大家都会自动散开,迅速找到自己的位置,使 Zhang Shan to a bureau to work. Identify the location of a bureau office magnificent momentum. Every day to get off work, when the elevator movements, the kind of feeling of dazzling, so that Zhang Shan more or less reap a sense of accomplishment. Zhang Shan love observation, he found people looking up and down the elevator different expressions, some look serious, some look calm, some look tired, while others are no expression. Of course, when there was a smile, there was a sudden appearance of bureau leadership in the elevator. So everyone was filled with a smile in an instant, while the leader was very nodded. Over time, Zhang Shan found a law: every time the elevator crowded, we will automatically spread, quickly find their own position, so that