May 22, Sex slave storm Osaka mayor accuses South Korea of hypocrisy . This article appeared in the South China Morning Post print edition as. Feb 14, Chinese authorities in the northeastern province of Heilongjiang by launching a widespread crackdown on prostitution and sex workers. the Chinese version of Twitter, and other social media to criticise the campaign. We consider perinatal health among Chinese births in the United data, we find sex ratios that are above the biological norm of males per.