C:>gem i gosu
Temporarily enhancing PATH for MSYS/MINGW...
Building native extensions. This could take a while...
Successfully installed gosu-1.3.0
Parsing documentation for gosu-1.3.0
Done installing documentation for gosu after 0 seconds
1 gem installed

C:>shou.rb
internal:C:/Ruby/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb:85:in require': 126: �Ҳ���ָ����ģ�顣 - C:/Ruby/lib/ruby/gems/3.1.0/gems/gosu-1.3.0/lib/gosu.so (LoadError) from <internal:C:/Ruby/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:85:in require'
from C:/Ruby/lib/ruby/gems/3.1.0/gems/gosu-1.3.0/lib/gosu.rb:22:in <top (required)>' from <internal:C:/Ruby/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:160:in require'
from internal:C:/Ruby/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb:160:in rescue in require' from <internal:C:/Ruby/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:149:in require'
from C:/R/Hike/draw.rb:20:in <top (required)>' from <internal:C:/Ruby/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:85:in require'
from internal:C:/Ruby/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb:85:in require' from C:/R/Hike/shou.rb:23:in

'
internal:C:/Ruby/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb:85:in require': cannot load such file -- gosu (LoadError) from <internal:C:/Ruby/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:85:in require'
from C:/R/Hike/draw.rb:20:in <top (required)>' from <internal:C:/Ruby/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb>:85:in require'
from internal:C:/Ruby/lib/ruby/3.1.0/rubygems/core_ext/kernel_require.rb:85:in require' from C:/R/Hike/shou.rb:23:in '

Note: It is okay in Ruby 3.0