ChinaTextbook

Product Introduction

1. Definition: ChinaTextbook is a comprehensive, open-source digital archive and repository hosted on GitHub. It is a technical solution for the centralized storage and distribution of Chinese educational textbook PDFs.
2. Core Value Proposition: It exists to solve the problem of fragmented and hard-to-find digital Chinese educational resources by providing a single, searchable repository for the entire Chinese curriculum, from elementary school to university level, thereby promoting educational equity and access.

Main Features

1. Comprehensive Curriculum Archive: The repository is meticulously organized by educational stage: Primary School (including the 5-4 school system), Junior High School, Senior High School, and University. It covers core subjects like Mathematics across all levels, providing a complete digital textbook library.
2. Open-Source and Community-Driven: Hosted on GitHub, the project is fully open-source, allowing for community contributions, transparency, and long-term sustainability. The use of Git enables version control and collaborative maintenance of the resource collection.
3. Large File Handling Solution: To circumvent GitHub's file size limitations (100MB hard limit, 50MB warning), the project implements a technical workaround. Large PDF files are split into smaller segments (e.g., 35MB chunks like filename.pdf.1, filename.pdf.2) and includes a dedicated merge utility (mergePDFs-windows-amd64.exe) for seamless user-side reconstruction.
4. Supplementary Learning Materials: Beyond standard textbooks, the repository includes valuable ancillary resources such as "初中练习题_带答案" (Junior High practice exercises with answers), providing a more complete learning and revision toolkit for students.

Problems Solved

1. Pain Point: It addresses the fragmentation and commercialization of public educational resources. The description notes that free resources from official channels are often hard to access centrally, leading to third parties selling watermarked versions. This project eliminates paywalls and centralizes access.
2. Target Audience: Primary users include: students across China and overseas Chinese communities seeking curriculum materials; educators and researchers needing reference materials; parents homeschooling or supplementing their children's education; and self-learners interested in the Chinese education system.
3. Use Cases: Essential for: an overseas Chinese family wanting their child to follow the mainland Chinese curriculum; a university student needing quick access to a foundational "Higher Mathematics" or "Linear Algebra" textbook; a researcher conducting a comparative analysis of textbook content across different editions or grades.

Unique Advantages

1. Differentiation: Unlike scattered educational websites or commercial platforms selling PDFs, ChinaTextbook is a free, consolidated, and community-maintained archive on a trusted platform (GitHub). It offers a more reliable and permanent collection compared to temporary file-sharing links.
2. Key Innovation: The project's operational model combines the power of open-source collaboration (via GitHub) with a practical technical solution for distributing large files (the split-and-merge system). This creates a scalable and user-empowering framework for sharing large-scale educational datasets.

Frequently Asked Questions (FAQ)

1. How to merge split PDF files from the ChinaTextbook repository? Download the mergePDFs-windows-amd64.exe utility provided in the repository's documentation, place it in the same folder as the split files (e.g., .pdf.1, .pdf.2), and run the executable. It will automatically detect and combine the segments into a single PDF.
2. Is the ChinaTextbook GitHub repository legal and safe to use? The repository hosts textbooks that are publicly available and intended for educational use. The maintainer's goal is educational equity. Users should always comply with their local copyright laws and use the resources for personal study or research, consistent with fair use principles.
3. What is the difference between the "五•四学制" and standard primary/junior high sections? The "五•四学制" (Five-Four System) is an alternative Chinese educational structure where primary school lasts five years and junior high lasts four years, as opposed to the standard six-year primary and three-year junior high system. The repository separately archives textbooks designed for this specific curriculum.
4. Can I contribute or add missing textbooks to the ChinaTextbook archive? Yes, as an open-source project on GitHub, contributions are encouraged. Users can propose additions via GitHub Issues or submit new resources via Pull Requests, following the repository's existing organizational structure.
5. Where can I find university-level math resources beyond the textbooks listed? The repository's README points to an external resource, "更多数学资料-(大学数学网)", suggesting it as a further destination for advanced university mathematics materials, indicating the project acts as a curated starting point.