You can upload resources to Baidu Cloud and change the suffix, such as changing mp4 format to mp4 1 and converting video files into document format, which is generally safer.

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Notes on the use of resources:

The latter e-book .7z, password compression, can be shared. It should be noted here that the 7zip used is encrypted in .7z format, which must be decrypted by 7zip, so the best way to install this software is to encrypt it with zip, which is a common format in windows.