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.
Explorer.exe is a safe file developed by Microsoft Corporation. The file is part of Microsoft Windows Operating System. The explorer.exe file is a Windows GUI shell, that is usually called Windows Explorer. Its graphical user interface lets you see your hard drives, folders, and files.