Sitting on the edge
Bi Zui Jichi, a Chinese idiom, Pinyin is B ì Zu ò J ī ch í, which means to describe the wonderful language of the article. From preface.
The source of the idiom is Wang Shizhen's preface in Ming Dynasty: "it's because of emotion that it's like. It's like touching things and comparing them with other things. It's so popular that it can't succeed. It's just like sitting on the edge of the earth, and it's like falling into the clouds I doubt if there is any way to go up. "
Sitting on the edge
change existing habits and customs - yí fēng yì shàng