There are white clouds, dark clouds and flaming clouds in the world. What other clouds are there?

Colorful clouds, earthquake clouds, cumulonimbus clouds, perforated clouds.

Cai Yun: A colorful cloud, mainly red, appears on the horizon in the early morning or evening on a sunny day.

Earthquake cloud: Earthquake cloud is a kind of cloud that is mistakenly thought to be able to predict earthquakes in advance. At present, there is no accurate definition and it is not recognized by meteorological or geological professionals. Mainly circulated in China and Japan. Due to the lack of the most basic definition of "earthquake cloud", it is difficult to generalize its characteristics as long as the "weird-looking" cloud is classified as an earthquake cloud.

Cumulonimbus cloud: Cumulonimbus cloud, also called thunderstorm cloud, is a kind of cumulonimbus cloud. Cumulus clouds are formed by adiabatic cooling of air in the form of convection and saturation and condensation of water vapor, including light cumulus clouds, dense cumulus clouds, cumulonimbus clouds and broken cumulus clouds.

Perforated clouds: Perforated clouds are a wonder of nature. Seeing a cloud hole with a diameter of about several hundred meters in the air is called a hole-piercing cloud, also known as a hole-piercing cloud. Some high-altitude clouds at certain heights contain ice crystals and supercooled water droplets below 0 degrees Celsius but still in liquid state. When the plane passes through such clouds, the supercooled water drops will cool quickly and fall into the snow, forming a round hole in the clouds.

Cai Yun's photo: