Most Mandarin varieties have four tones. The final stops of Middle Chinese have disappeared in most of these varieties, but some have merged them as a final glottal stop. Many Mandarin varieties, including the Beijing dialect, retain retroflex initial consonants, which have been lost in southern dialect groups.
explorer.exe is a system process that is needed for your PC to work properly. It should not be removed. Check your system now to identify unused processes that are slowing down your computer. The explorer.exe file is an executable file for Windows Explorer.
Broken EXE Association. Executable (.EXE) files are the programs you run for most tasks on a computer. Now and again someone reports that they have, in error, assigned some other program to the .EXE extension without first establishing a System Restore Point so they can recover from making this error. When that happens little will run on the computer.