ChinaTextbook
ChinaTextbook collects domestic PDF teaching material resources for all grades from primary school to university, and puts them on github for everyone to download for free. Project address: https://github.com/TapXWorld/ChinaTe
Introduction
ChinaTextbook collects domestic PDF teaching material resources for all grades from primary school to university, and puts them on github for everyone to download for free.
Project address: https://github.com/TapXWorld/ChinaTextbook
In fact, all the teaching materials and resources here can be downloaded for free on the national smart education platform for primary and secondary schools, but registration and login are required. Some people take advantage of this information gap and package these tutorials for sale.
National Smart Education Platform for Primary and Secondary Schools: Click here to visit
Question: How to merge split files?
Since GitHub has a maximum limit on the upload of a single file, files larger than 100MB will be refused to upload, and files larger than 50MB will receive a warning when uploaded. Therefore, files larger than 50MB will be split into multiple files of 35MB each.
Example
Example of file being split:
- Compulsory education textbook · Mathematics for Grade 1 Volume 1.pdf.1
- Compulsory education textbook · Mathematics for Grade 1 Volume 1.pdf.2
Solution
To merge these split files, you only need to perform the following steps (the same is true for other operating systems):
- Download the merge program mergePDFs-windows-amd64.exe to the folder containing the PDF files.
- Make sure mergePDFs-windows-amd64.exe and the split PDF files are in the same directory.
- Double-click the mergePDFs-windows-amd64.exe program to automatically complete file merging.
Download method
You can download the file merging program through the following link:
Download file merge program
File and program examples
- mergePDFs-windows-amd64.exe
- Compulsory education textbook · Mathematics for Grade 1 Volume 1.pdf.1
- Compulsory education textbook · Mathematics for Grade 1 Volume 1.pdf.2
Visits：23
Updated：2026-11-07
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