Answer :
1. Mao did say that women hold up half the sky - so this statement is correct. But let's look at other statements. 2: China, but also other countries also support absolute gender equality (at least in theory) so it's false. 3: Traditional Confucianism did not change, and still maintains the inferiority of men - traditional beliefs don't change often. 4: The nationalists have no reason to support female succession, especially that male succession is the traditional one, so that's the one they would support.