gāo'àn​shēn​gǔ

high banks and deep valleys

高岸深谷 gāo'àn​shēn​gǔ
high banks and deep valleys
high banks and deep valleys; a secluded or remote location
dramatic changes in world affairs
a metaphor for the great changes in human affairs or world events where high places become low and vice versa; derived from the Classic of Poetry (Shijing)