It should be to seriously explore the knowledge you love until you understand it. There are many subjects I like in high school, but chemistry and biology are my favorite subjects. I have been interested in the natural environment since I was a child. I love the fish in the stream, the flowers in Tanobe, and the running dogs. The TV programs I watch are generally documentaries about animal world and global geography. I often marvel at how amazing and diverse the world species around me are: there are oviparous mammals, platypus in Australia, the origin of human beings in East Africa, saber-toothed tigers buried in the frozen soil of Russia, and countless animals and plants in the tropical rain forest of Brazil ... How did thousands of species form? What is this world of flowers made of? I am eager to know this world full of unknowns. With the growth of school age, I gradually realized that countless things in the world are just hundreds of elements in the periodic table. The world around me is composed of molecular breakdown and atomic recombination, which is my initial understanding of chemistry. I also try to explore the changes and laws of matter and try to explain the problems around me with the knowledge I have learned. I know that there is no essential difference between the tallest animal on the tree of life and the simplest single-celled organism. They are all based on DNA, and they even use a set of codons. I want to follow Darwin's footsteps, board the Beagle and go to the Galapagos Islands to study the finches there, explore the origin and evolution of species, and study the influence of environment on species. I was amazed at the perfection and neatness of the double helix structure of DNA discovered by Clark and Watson. The discovery that we blurted out that "DNA is the main genetic material" is so difficult that science did not happen overnight, but also experienced a spiral rise. I know what biodiversity means to us. Human activities have greatly affected the natural environment, and I will try my best to reduce the impact of human beings on the environment. Looking back on my student days, I am still moved by my enthusiasm and persistence. I stepped on the shoulders of my predecessors to learn what I love. At that time, I had a sense of satisfaction and pleasure that I can't even get today. This kind of satisfaction is simple and happy, and has nothing to do with my grades. Do I get it? No, I'm like the child who picked up shells in the sea. I'm glad for the shells I accidentally found, but I don't know anything about the sea in front of me. Staring at the sails of the Beagle, we will uncover the mystery of nature. It takes several generations to discover the magic of chemistry, biology and nature. Researchers are like a group of children around the candy house, peeling candy paper carefully and hopefully. Now I am engaged in a job that has nothing to do with chemistry and biology. But my love for chemistry, biology and nature is still the same as when I was a child. Still get the latest subject information from various channels, watch BBC's "Earth Pulse 2" and "Blue Planet 2" and continue to marvel at the magic of nature. I remember in the postscript of the last biology book (People's Education Edition) in the second semester of grade two: "The study of biology is coming to an end, but the subject of biology is constantly developing, and we will pay attention to it in time." Yes, I am also paying attention to and studying, which is my simplest happiness.