I didn’t ever question whether this was ever a Chinese proverb or not. Ok, so technically “handsome is as handsome does” makes sense (although “handsome is that handsome does” doesn’t) if you use a not-so-obvious definition of handsome, but it sounds stupid when you consider the general use of the word handsome today.

I must be really bored to reply to that comment.

The proverb “Handsome is as handsome does” is not a Chinese proverb.

For more info and its meaning go to the following website: http://www.answers.com/topic/handsome-is-as-handsome-does

FYI:
Plus the grammar is correct.

I’m really bored.