黄昏而凉夕阳而寒
[huáng hūn ér liáng xī yáng ér hán]
'黄昏而凉夕阳而寒' can be paraphrased as 'Dusk and sunset make everything cool down and become cold gradually'. It describes the feeling of depression while observing the sun gradually falling and the sky becoming darker and colder at dusk.