open cmd or powershell in Windows
run 'c:\tools\msys2\usr\bin\ls.exe'
output: ''$'\343\200\214\345\274\200\345\247\213\343\200\215\350\217\234\345\215\225'
MinTTY bash is ok. I want to use LS and other tools in CMD/PowerShell.
MSYS_NT-10.0-25300 version 3.4.5.x86_64 (runneradmin@fv-az411-742) (gcc version 11.3.0 (GCC) ) 2023-01-20 09:17 UTC
Add LANG='C.UTF-8' to Windows system env. it works now.