This couplet was inscribed by Liu Yong, a calligrapher in the Qing Dynasty, with the title "Suzhou Ou Yuan Gui Yan Zhai".
This is an excerpt from Lu's "A Sword Sweep of the Drunk Ancient Hall".
It means: in real life, how do people relax after work and what to look for in leisure.
Everyone has different tastes and ways.
The same people are not satisfied with anything.
"Nothing outside" means not being bound by things outside, but maintaining an ethereal and clear state of mind.
This couplet shows the mood and interest of lovers' garden owners who are free from vulgarity and lust, have leisure to study, cultivate one's morality and cultivate one's character.