Placing vertical Chinese text on one figure (.exe)

Hi

I complied the below code as one .exe file but the vertical Chinese could not been shown. There is no error when I run it on the matlab command window. Do you know how the vertical chinese text could be shown on one figure as one .exe file?

Thanks so mcuh Jessica

clear
str='恒生指數';
figure1=figure('Visible','off'); %
plot(1:10);
text(5,5,str,'FontSize',10,'Color','r');
text(5,5,str','FontSize',10,'Color','g');
plot1_filename='testing.png';
print('-dpng', plot1_filename, '-r100');
close all
clear