Huawei Y6 archive in RAR format, 1.87 MB, whose name does not state the year or exact variant, so the contents should be opened and checked first. The Y6 line spans several generations with different boards, which makes matching important. Extract with WinRAR or 7-Zip; the files are likely schematic or layout pages for tracing charging, PMIC and display lines, finding test points and checking for shorts. Compare model identifiers inside the documents with the label or board markings of the phone you are repairing.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @uzb4422. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.