First of all, Xiao Hong could ask a passer-by for directions.Since it was a sunny day, she could also use the position of the sun to tell the directions.And finally she could also replace the signpost so that it correctly named the direction she had come from.Then it would be correct for all the other directions.

　　首先，小红可以向过路人询问方向。既然那天天气晴朗，她可以通过太阳来确定方向。第三种方法是，她可以把路标扶起来，路标会准确地显示她来的方向。然后她就可以辨明其他几个方向了。