摘要
While taking an escalator, which side do you habitually stand on? When you are in a hurry, do you walk on the escalator to save time? Most of the major cities in China follow the "stand-right, walk-left" mle for escalators, that is to say, riders should stand on the right side and walk on the left side. Gradually, this rule has been followed by many people and has become the norm. In April this year, however, the Shang hai Metro released the latest version of its escalator instructions, which don't mention the "stand-right, walk-left" rule but, instead, prohibit walking on the escalators.This change disrupted the long-standing consensus and aroused heated discussion.
