Desperate for materials for science fiction stories

The mysterious little tank Huang Ming made a small tank out of wood. He is going to get some paint and paint it beautifully. I suddenly remembered what "paint" my father was working on. "paint" is probably something like paint! It happened that dad was not at home. He climbed into dad's lab through the window. There are many bottles and jars in the laboratory. Huang Ming saw a jar in the glass cupboard with the label "X paint". "Ah, found it! This is it! " Huang Ming happily picked up the jar and climbed out of the window. Huang Ming painted the small tank with "X paint" and didn't see any color at all, just like a layer of transparent oil. Huang Ming wanted the tank to have color, so he decided to go to a friend's house and ask for some paint. The small tank was put on the windowsill. When Huang Ming came back with a can of paint, he saw his younger brother playing with his small tank. Huang Ming quickly shouted, "Who told you to move my tank? Give it back to me! " The younger brother blinked naughtily and ran away with a small tank. Seeing that he was about to be caught up, the younger brother threw the small tank on the grass: "What's the big deal! Here you are! " Huang Ming's heart ached so much that he immediately bent down to pick it up. But strangely, the small tank suddenly disappeared. When my brother looked back, the tank was gone, only to know that something had happened. He hurried to help Huang Ming find it. The two brothers were prone on the grass, and their eyes almost touched the grass. "Here it is!" The younger brother suddenly cried, "the small tank has become as green as grass!" " My brother picked up the small tank, and strange things happened again. The small tank immediately returned to its original wood color. "What is this?" Huang Ming put the small tank on the grass, and the small tank became green again, just like the grass, which made people unable to tell it apart. He cried out in surprise. "What a strange thing!" Huang Ming said, "Tell mom quickly!" The two brothers ran to tell their mother. Mother is watering the garden (p incarnation). Huang Ming brothers scrambled to say, "Mom, do you think it's strange? When the small tank is placed on the grass, the color becomes like grass!" " "What?" Mom hasn't figured out what's going on yet. The two brothers took it to show their mother. When they missed it, the small tank fell into the flower bed and disappeared immediately. Later, it was discovered that the small tank was quietly hiding among a bunch of roses, and the color became as red as roses. Only then did they realize that this was all about "X paint". When dad came back, Huang Ming first asked dad to forgive him for stealing the paint, and then asked dad to tell the secret of "X paint". Dad took Huang Ming into the laboratory, pointed to an animal immersed in a bottle and said to Huang Ming, "Have you seen this?" Huang Ming looked carefully and saw that the animal was less than a foot long, with four feet and a slender tail. "It's a four-legged snake!" Huang Ming is not sure to answer. "No, this animal, whose name is' Evasion', grows in Africa and is usually called a chameleon." Huang Ming just remembered that the chameleon will change color. If it hides in the grass, its body will immediately turn into grass green. If it hides in the red flowers, it will immediately turn into red. The book called it "African Magician". Dad told him why the chameleon changed color. In every cell of chameleon skin, there are four pigments: red, yellow, ochre (zhě) and green. These four pigments will expand and contract at one time. For example, as soon as green Qin was stimulated by grass green, it immediately spread out like a branch and covered the whole cell. At the same time, the other three pigments contracted into tiny dots. At this time, the cells turn green. If the chameleon jumps into the red flowers, then the red pigment is stimulated, immediately spread out and covered the whole cell, and the other three pigments shrink into tiny spots at the same time, and the cell becomes red again. Huǎng Ming suddenly realized, "'X paint' must be made of chameleon pigment!" "Yes, I raised the skin cells of the chameleon in a liquid, making them seem to live on the chameleon." "Dad, how many chameleon skins you have to cut off from this jar of' X paint'!" Huang Ming was a little sorry, because his little tank used a lot of paint. "No," my father said with a smile, "the color-changing cells are alive and can reproduce, and they reproduce very quickly. It can guarantee that I will continue to manufacture X paint. " Oh, I see. Huang Ming smiled happily.