I had no problems with it:
"\!\(\*GridBox[{{\:4f60},{\:597d}\n }]\)" 
I was able to insert blank in between by this code:
"\!\(\*GridBox[{{\:4f60},{"<>FromCharacterCode[10240]<>"},{\:597d}\n }]\)" 
I had no problems with it:
"\!\(\*GridBox[{{\:4f60},{\:597d}\n }]\)"
I had no problems with it:
"\!\(\*GridBox[{{\:4f60},{\:597d}\n }]\)"
I was able to insert blank in between by this code:
"\!\(\*GridBox[{{\:4f60},{"<>FromCharacterCode[10240]<>"},{\:597d}\n }]\)"
I had no problems with it:
"\!\(\*GridBox[{{\:4f60},{\:597d}\n }]\)"