When one is at a crossroads, there are signposts that one must know how to read, there are symbols that one must know how to interpret, if one is not to be misled and make incorrect choices.
人到十字路口，有路标你必须懂得怎么读，有标志你必须懂得怎么解释，否则你就会走错路，作出错误的选择。