Highly doubtful. What would a war accomplish in that instance?
I can tell you from personal experience, the ratio of men to women is seriously out of whack (no doubt due to their long practice of killing females at birth) and it is already difficult in some areas for young men to find available women to wed with. My fiance is native to China and the men there sure dont appreciate seeing a foreigner coming in and taking one of their women. Sometimes you can feel the stares burning through the back of your head as you walk down the street in certain areas.
A lot has changed now, women in china are not allowed to have tests done to determine the sex of the fetus before it is born, this of course is done in attempt to discourage the discrimination against female children. Now it is actually preferrable to have a female child because the family will not have to pay the debt when their child wishes to marry and a handsome price can be attained for a beautiful bride.