Okay, I need to create a Wikipedia-style document about folding bicycles under the categories of hobbies, exercise, and cycling. Let me start by understanding the requirements.

First, the structure: H1 for the title, an overview section, several sections with H2 and H3 headings, and maybe references or related documents. The content needs to be accurate, detailed, easy to read, and use technical terms with explanations. Also, markdown formatting with proper hierarchy, lists, tables, code blocks if needed, and at least 800 characters.

The title is "접이식자전거" which translates to "Folding Bicycles." Let me start by outlining the sections. The introduction should explain what folding bicycles are, their purpose, and maybe a brief history. Then, I can have sections on design features, advantages, disadvantages, types, usage scenarios, maintenance tips, and related topics.

For the overview, I'll mention that they're designed to be compact, useful for storage and transport. Maybe include some historical context, like when they were first developed.

In the design section, I should talk about the folding mechanism, materials used (aluminum, carbon fiber), and components like hinges and locks. For advantages, portability, space-saving, convenience for public transport. Disadvantages could be higher cost, potential structural weaknesses, maybe less stability compared to regular bikes.

Types of folding bicycles: manual vs. automatic, different models from brands like Brompton or Dahon. Usage scenarios: urban commuting, travel, storage in small spaces. Maintenance tips might include checking hinges regularly, proper storage, and cleaning.

I need to make sure each section has H2 headings, maybe some H3 for sub-sections. Use bullet points or lists where appropriate. Avoid markdown code blocks unless there's technical content, which I don't think is necessary here. Check that all terms are explained, like "hinge mechanism" or "carbon fiber."

Also, ensure the document meets the 800-character minimum. Let me count: each section should be sufficiently detailed. Maybe add a table comparing different types of folding bikes? Or include some examples of brands and their features.

Wait, the user mentioned to use H3 for sub-sections. So under each H2, I can have H3 headings. For example, under "Design Features," maybe "Folding Mechanism" as an H3.

I should also check for accuracy. Are folding bikes actually more expensive? Yes, because of the engineering required. Do they have structural weaknesses? Some might, but modern ones are durable. Need to present that objectively.

Include references or related documents at the end. Maybe link to "자전거" (bicycle) or "도시 이동수단" (urban mobility) if those exist in the wiki structure.

Avoid any markdown syntax except for headings and lists. Make sure the language is clear and concise, avoiding jargon without explanation. For example, when mentioning "aluminum alloy," explain it's a lightweight material.

Let me start drafting each section step by step, ensuring all points are covered and formatted correctly.