The same idiom as "There are hills and valleys in the heart" means "There are hills and valleys in the chest", which means that one's judgment and handling of things are different. From Ye Shengtao's poem (originally titled "The Gardens of the Humble Administrator - Talking about Suzhou Gardens"), "It may be a series of mountains, or a few hills with bamboo flowers and trees, it all depends on the designers and craftsmen's many experiences in their lives, and their minds. Hill valley.
”