Does this cloud have a name? Is it an astronomical phenomenon? It's beautiful. This is my first time. Thank you for your answers.

In meteorology, this kind of cloud is called cirrus. The definition given by Baidu Encyclopedia is, please compare it with the landlord, which should be very good:

"Dense cirrus clouds are high clouds, and the cloud height is generally above 6000 meters. Clouds are scattered and isolated, arranged irregularly. The cloud is composed of ice crystals, thick in the middle and thin on both sides, and the silk thread structure at the edge is obvious, so you can't see the complete halo when you meet the sun and the moon. Due to the high cloud bottom, the cloud bottom is yellowish or reddish before and after sunrise and sunset. Occasionally there is sporadic precipitation. "

There are many mistakes in the classification of clouds on the Internet. For example, Baidu Encyclopedia put a photo of a hooked cirrus in a dense cirrus. More than 70% of the results in the first two pages of Baidu pictures are not cirrus clouds. Let's take a photo of a photographer who works in a weather station. Let's take a look at science:

/mtjj/20 1409/t 20 140930 _ 23345 . html

The standard classification of PS meteorology is only a description method, and the literary "cloud" of friends upstairs is beautiful and appropriate.

PPS originally wanted to introduce the standard cloud image series on the website of Shanxi Meteorological Bureau to the landlord, but found that the connection could not be opened, please forgive me.