What does wallpaper about sunset mean?

The wallpaper about sunset refers to the wallpaper on the desktop of mobile phone, which is about sunset.

Sunset is a Chinese character, and the pinyin is xěyáng y, which means the sun in the evening; Also refers to the west side of the mountain; It is also used to describe old age. Sunset is usually orange-red because it is close to dusk.

The most puzzling illusion is that the sun at sunset looks two and a half to three and a half times bigger than it did at high altitude, just like a huge jade plate hanging in the distance of the horizon. But in fact, astronomers outside the atmosphere have used various instruments, including cameras, to prove that the sun at dusk is the same size as the sun at noon.