The whole text of The Fiery Clouds has seven natural paragraphs, which can be divided into three parts:

The first part (1 and 2 natural paragraphs): the fiery clouds came up, and the change of the scenery around them;

The second part (3-6 natural paragraphs): write about the rapid change of the fiery clouds in terms of the fast change of colors and the fast change of shapes;

The third part (the seventh natural paragraph): the fiery clouds went down;

Original text:

After dinner, the burning clouds came up. The sunlight made the children's faces red, the big white dog turned red, the red rooster turned gold, and the black hen turned rosewood.

The old man who fed the pigs stood at the base of the wall and watched with a smile on his face as his two little white pigs turned into little golden pigs. He was just about to say, "You have changed ------ too," when a man walking beside him in the cool air said to him, "Your old man is necessary to live a long life; you are old with a golden beard." The clouds in the sky burned from the west to the east, red as if the sky were on fire.

The burning clouds in this place were extremely varied, one moment red, one moment golden, one moment half purple and half yellow, one moment half gray and half lily color. Grape gray, pear yellow, eggplant purple, these colors sky have, there are also some can not be said, have never seen the color.

A little while later, a horse appeared in the sky, with its head to the south and its tail to the west. The horse was kneeling, as if it was waiting for someone to ride on its back before it stood up. After two or three seconds, the horse got up big. The horse's legs stretched out, the horse's neck grew, and a horse's tail was missing. The people watching were looking for the tail when the horse became a blur.

Suddenly there came another big dog. The dog was very fierce, and it was running in front of it, and it seemed to be followed by several small dogs. As it ran, the small dogs ran off somewhere and the big dog disappeared.

Then came a big lion, exactly the same as the big stone lion in front of the temple, also so big, also so squatting, very majestic and calmly squatting. But it changed in a flash, and if you wanted to see that big lion again, you couldn't see it.

For a moment, in a trance, the sky looked like this and that, but in fact it looked like nothing, and nothing could be seen. One must lower one's head, rub one's eyes, meditate for a while and look again. But the sky does not wait for those who love its children. After a while, the fire clouds went down.

Expanded Information:

Causes of the formation of fire clouds:

When the sun has just come out or is about to set, the clouds in the sky are often reddish, like fire. as if they were on fire. These reddish clouds are known as morning and evening sunsets, and they are also known as "burning clouds".

So the sun is a mixture of seven colors of light: red, orange, yellow, green, cyan, blue and purple. In these kinds of light, red light through the air layer of the greatest ability, orange, yellow, green light, green, blue, violet light is the worst. When the weather is clear, hanging in the air less raindrops, red, orange, yellow, green several colors of light almost all through,

Only green, blue, purple three colors of light to stop, and these several kinds of light, but also the number of blue light reflection of the most, so the whole sky "dyed" into the blue.

And in the early morning or evening when there are clouds, the sunlight through the air layer to be thicker than at noon, in which the yellow, green, blue, blue, purple several kinds of light, in the air, "walking" not much far on the exhaustion of only red, orange light can be through the air layer to probe the sky, "dyed" into the sky.

Baidu Encyclopedia - Pyroclastic Clouds