靠左走还是靠右走

Knowledge of Keeping to the Edge

走路是靠左边走还是靠右边,对于大家来说又有什么区别,但个中历史却包含着时代变迁和国运动荡。

It may be no difference with whether we should go by left or right side,but it means a lot for the history with changes of times and upheavals of country.