When i use CGContextShowTextAtPoint to draw none english characters,such as Chinese,it shows blocks on my iPhone.

Code:

CGContextRef context;
context = UICurrentContext();
  CGContextShowTextAtPoint (context, 40, 50, [NSString stringWithUTF8String:@"中国"], 10); 

  CGContextShowTextAtPoint (context, 100, 100, [NSString stringWithUTF8String:"\xe4\xb8\xad\xe6\x96\x87"], 10);

Any one can tell me how to solve it?
Thanks in advance!

i dont know if its the optimal solution but you can try and draw glyphs