This report analyzes over 36,000 job advertisements posted between 2013 and 2018 on Chinese recruitment and company websites and on social media platforms. Many of the ads specify a requirement or preference for men. Some job posts require women to have certain physical attributes – with respect to height, weight, voice, or facial appearance – that are irrelevant to job duties. Others use the physical attributes of companies’ current female employees to attract male applicants.
https://www.hrw.org/sites/default/files/report_pdf/china0418_web.pdf