What's missing here?

As South Korea inaugurates its first woman president today, this may be a good time to look at China's incoming Politburo Standing Committee and observe what's missing from it.  All seven members are drawn from the 696,340,752 Chinese with a penis (give or take the odd eunuch).  Not one of them is drawn from the 644,994,400 Chinese with a vagina.  (2010 figures)

Fact 1: China's constitution guarantees sexual equality.
Fact 2: China has one of the worst gender imbalances in the world.