China DOS Union

The code is as follows:
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@echo off
set "v123=不存在" & set "v456=不存在" & set "v789=不存在" & set "vabc=不存在"
for /f "tokens=3" %%i in ('reg query "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer" ^| find /i "123"') do if "%%i"=="0x1" set "v123=存在"
for /f "tokens=3" %%i in ('reg query "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer" ^| find /i "456"') do if "%%i"=="0x1" set "v456=存在"
for /f "tokens=3" %%i in ('reg query "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer" ^| find /i "789"') do if "%%i"=="0x1" set "v789=存在"
for /f "tokens=3" %%i in ('reg query "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer" ^| find /i "abc"') do if "%%i"=="0x1" set "vabc=存在"
echo 123 key %v123%
echo 456 key %v456%
echo 789 key %v789%
echo abc key %vabc%
pause
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To simplify it, especially in terms of the size and the number of for loops, you can do the following:
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@echo off
set "keys=123 456 789 abc"
setlocal enabledelayedexpansion
for %%k in (%keys%) do (
set "v%%k=不存在"
for /f "tokens=3" %%i in ('reg query "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer" ^| find /i "%%k"') do (
if "%%i"=="0x1" set "v%%k=存在"
)
echo %%k key !v%%k!
)
endlocal
pause
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