ZIP archive covering the Xiaomi Mi 9 Lite, code name pyxis, which the name also ties to the Mi CC9, the related model sold under that name. It is 882 KB, and no document type or board revision is stated, so check the contents after unpacking. At this size it most likely holds service documents such as schematics. Use them to trace PMIC rails, the charging path and connector pinouts, and to locate parts near a short. Confirm that the board markings of your handset match the drawings before measuring.
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 @esquematicosparatodos. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.