上海火车站有南、北两个出站口，其目的是为了方便游客，但对多数初到上海的人来说，这并不“方便”。他们在地道口望着一南一北的箭头，往往迷惑不解，最后大都随着较多的人流走了。当只有一条路可走时，我们没有选择的自由，但可省去选择的烦恼和南辕北辙的担心；当我们面前 Shanghai Railway Station has two exit stations in south and north. Its purpose is to facilitate tourists. However, for most people who arrive in Shanghai, this is not “convenient.” They are often confused by the fact that they look at the arrows of a south-north road in tunnels, and most of them eventually flow away as more people. When there is only one way to go, we do not have the freedom of choice, but we can save our worries of choice and our worries. When we are in front of us