I am Zhou zining

Author: sincere

  • PED along the demand curve 

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    My original explanation focused on the theoretical reasoning behind why price elasticity of demand (PED) varies along a straight-line demand curve. But there’s another compelling way to see this—by plugging actual numbers into the formula and calculating the PED directly. When you compare the results, it becomes strikingly clear how this seemingly uniform slope harbors…

  • Learning reflection-economics & ESS

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    From what I have learned in ESS(Environmental system and society), a model is a simplified representation of reality. Economics simplifies real-world economic events into diagrams and frameworks—such as the market structures we studied this week—to help consumers and firms make more informed decisions. By breaking down complex interactions into understandable elements like supply, demand, competition,…

  • The significance of Liuyang fireworks enterprises

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    This article will introduce Liuyang fireworks and its significance. The fireworks industry in Liuyang, Changsha, means the world to the local community. Here’s why it matters so much: Liuyang, a city in Changsha, is perfectly suited for growing its fireworks industry—and here’s why: First off, it’s got all the raw materials it needs close by.…

  • Liuyang Fireworks Interdisciplinary Practice Project2

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    This is another fireworks trading company, which differs significantly from Qingtai Fireworks Company. This company is relatively small in scale and specializes in exporting fireworks. Its export destinations include the United States, Japan, South Korea, etc. Moreover, we can also identify its primary target customers by observing the diverse languages on the outer packaging of…

  • Liuyang Fireworks Interdisciplinary Practice Project

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    This project aims to deeply understand the close connection between the Liuyang fireworks industry and the local economy, humanities and chemistry through a two-day and one-night visit, experience and study in Liuyang, Changsha. This is the Liuyang fireworks I saw with my own eyes, and this picture was taken by me. This article will briefly…

  • The first close-up observation of the mangroves

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    sincere
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    This was an on-campus club activity organized in collaboration with an external team specializing in mangrove research. As a member of the School Mangrove Club, I was thrilled to participate in my first-ever mangrove-related event—an exciting and educational experience! The leading teacher was introduced some kinds of mangroves to us. This photo was taken along…

  • 1

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    Mangrove recording Aegiceras corniculatum (L.) Blanco It is a shrub or small tree of the primens, the family of purple golden cattle, and the genus Candle fruit, 1.5-4 metres high; the twigs are hairless, brown and black. The leaves are alternate, almost opposite at the top of the branches, the leaves are leathery, obovate, oval or broadly…

  • nice day

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    nice day!

  • Hello world!

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    This is your first article. Edit or delete it, and then start writing!