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.