The book Dust Travel is a scientific fairy tale written by Grandpa Gao Shiqi. The book is divided into three sections: Autobiography of Bacteria and Immortal Spirit of Bacteria and People and Cells. The first part is Juner's autobiography. This part has been written by Juner in the first person. The full text describes how your son defeated the human body step by step: from the respiratory tract to the lungs, from the lungs to the nipples, from the nipples to the esophagus, and then from the intestinal cavity. Although the trip is over, if you win by luck, one side will be dominant! What I like best is its experience in the nipple: this is the first time that bacteria have come to the mouth of a newborn. He is lonely in this body, and no one competes with him for food. One thing he described is very specific: what climbs in from the nipple is a shrinking empty sac where breast milk can be produced. It especially likes breast milk, because there are small milk balls and many rare goods in it. Moreover, there are no white blood cells patrolling in breast milk, and there is no bactericidal power. So it is very happy and tells us that the blood cells it eats are delicious, because the nutrition is high and easy to get. He wants to live there, but after all, humans still love clean things. Animals scrub their breasts with alcohol before feeding their babies. How could he steal breast milk? It has long been eliminated! The second part, bacteria and people. I like clean water and turbid water best in this part, which makes me know a lot of knowledge that I don't know at ordinary times. For example, river water has the most bacteria, because it has its own bacteria in the water, and bacteria in the land, while groundwater has the least bacteria. I also know that there are fewer bacteria in the lake than in the river. Although the water in the lake looks green and dirty, it is cleaner than the river! How amazing, and because of the advanced technology, a kind of sterile water is used in chemical work, which is the purest clean water now. But it is difficult to make, and it is very precious and rare, so it is not often seen in daily life. The third part is the immortal spirit of cells. In this part, my favorite part is rambling about coarse grains and flour and rice. The article tells us that coarse grains have higher nutritional value than flour and rice, are more delicious and easier to digest with a little processing, and the price of coarse grains is lower than that of flour and rice. The food saved can be used to buy non-staple food (vegetables and meat) to supplement more nutrition. The article also tells us what vitamins are lacking in the body and what symptoms are prone to appear. It seems that vitamin supplementation is very important! This is the feeling after reading Dust Travel. Every part has my favorite articles. They are all very meaningful to my life. It seems that the sentence "There is Yan Ruyu in the book, and there is a golden room in the book" is correct, which also makes us know more about bacteria, and this kind of scientific fairy tale is also very interesting.