You can quit all loaded and open buffers, splits and tabs with:
:qa
If you want to quit without saving:
:qa!
You could assign a mapping to do this with a single stroke, this assigns the comma to quit everything without prompting to save:
nnoremap , :qa!<CR>
:wqall
writes before closing, that might be useful.
Type :he :qa
in vim for more info
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…