China is becoming a more unequal place for women, in 2018 slipping for a fifth consecutive year in the World Economic Forum's Gender Gap index.  Chairman Mao may have proclaimed that women can hold up half the sky, but the Communist party under Xi Jinping holds a far narrower view of female roles, cracking down on feminist activists and backing traditional values.  The impact is economic too, with research showing that being born female in China has a bigger impact on your earnings than any other variable, including family wealth.  This month, Louisa and Graeme are joined by two experts on the origins of China's gender divide, Leta Hong Fincher, who's just published a book called Betraying Big Brother and economist Jane Golley from the Australian National University.