This book records the author's experiences of insect observation. While introducing the habits of insects, the author also provides a personal account of interesting interactions with these insects. The first three chapters, namely, Insects in My Home, Insects in the Urban Park, and Insects in the Mountains, all describe the insects you may come across in these particular places. The fourth chapter - Endless Life - records a continued observation of insect life. In this chapter, the author starts from a strange phenomenon, asserting his hypothesis, and then goes on to verifying his conjecture throughout the observational process. By doing so, he provides a more real and vivid reflection of the growth and evolution of insects.