For VIM and some Muggles, I have read some articles before. You can enter [:reg] in the command line mode of vim to see which registers are in vim. As shown below.
But how to use the registers in the above picture, I thought it was to move the cursor to the place that needs to be copied, and then enter the command [:"+<CR>] in the command line mode to paste the contents of the register , But found that it has not worked. Later, by chance, I found that you can directly enter the command ["+p<CR>] in the general command line mode to paste at the cursor position .