My wife prefers me with hair.  She doesn’t give me a hard time about being bald.  She wants me to be happy whether I shave my head or not. 

I don't know anything about the culture of the Chinese people  but I think it's  safer to follow the rules of any society.  If it's just a wife issue that's one thing but if the society frowns on it then that's quite another matter.

It's your body...

That's true in the US(except the military) but maybe not in other countries.  There are some countries such as N. Korea that own the people

 Well I would do some serious research into Chinese culture and their view of western men with shaved heads as opposed to Chinese men with shaved heads before I would simply take your wife’s word for this.   I don’t know how Chinese people feel about other Chinese men who choose to shave their head but the  Chinese nationals I know are pretty worldly wise in and fully understand western fashions and don’t even blink at western men with shaved heads. 

 Your wife’s statement is ,  even if there were a modicum of truth in it for a Chinese person , an awfully convenient excuse for her to get what she wants.

Oh, I understand what it's like to keep the peace.  I shave my head daily to keep the peace here because if I miss a day, my wife calls me a "hippie".