Synonymous sentence with the wind and water turning.

Over the past 30 years, people in Hedong have become rich, and after 30 years, people in Hexi have also become rich-life is full of ups and downs; A tortuous career; vicissitudes of life

Pinyin sā n Shí niá n Hé d not ng, s ā n shí niá n hé x: and

Explain that Feng Shui was in Hedong 30 years ago and in Hexi 30 years later. Metaphor things change, ups and downs.

Source [source] Wu Qin Jingzi's "The Scholars" forty-sixth time: "Mr. Da,' thirty years in Hedong, thirty years in Hexi'! Just like thirty years ago, I saw with my own eyes what advantages your two families have. "