Indulge in love
Chinese idiom, Pinyin is f à ngq í nqi à h è, which means to indulge in traveling, not to care about the affairs of the world. It comes from the biography of Xie an in the book of Jin.
explain
Hills and valleys refer to mountains and rivers in general.
source
According to the biography of xie'an in the book of Jin, "although an is indulgent, every time he visits, he will be followed by prostitutes."
Indulge in love
authorized to open letters and act during another's absence - dài chāi dài xíng
hide one 's candle under a bushel - bù lù fēng huì