What does it mean that people are always sad when they are sad

People's worries are incomprehensible. You can't control it if you think about it. Even things that have nothing to do with mood and feelings can make people feel inexplicably sad.

The source is Song Tingjian's Reading Five True Stories with Chen Junyi.

Explaining people's empathy by legislation, when people are sad, some things unrelated to feelings will also cause people's sadness.

[Example] Huang Tingjian's poem: "When people are worried, they have nowhere to get together, and when they are not concerned, they are always sad." The suffering in the past is too deep. Some have nothing to do with human feelings.

For example, the sound of wind and rain can also make people sad, not to mention the yellow shoes that accompanied him to prison three times. (Wang, What I Know)

Reading with Chen Junyi is so real.

Secondly,

Shade in summer, oblique valley bells in late autumn.

When people come to trouble, they don't meet, and they are always sad when they are not in love.

The Legend of Too True was written by a historian in the early Song Dynasty. Unlike most of Yang Guifei's poems, which focus on making the past serve the present, and even write this peerless beauty as a national "disaster", his poems focus on rendering the artistic conception of love tragedy.

At this point, Li Shangyin is very touched. Although the elegance of Huang Tingjian's poems is expressed in the form of disharmony, while the elegance of Li Shangyin's poems is expressed in the form of grace, there are differences between them, but it does not affect the approximate melancholy atmosphere.