Strictly necessary (always on)Your session, form security (XSRF) and this choice. The site does not work without them.

AnalyticsGoogle Analytics 4 and Google Tag Manager (Google LLC, USA; the _ga and _ga_* cookies, up to 2 years) and, on some pages, Yandex Metrica (Yandex LLC, Russia; _ym_uid and _ym_d up to 1 year, and other _ym cookies): measure which pages are visited and what is clicked.

AdvertisingGoogle AdSense (Google LLC, USA): shows and measures ads; the __gads, __gpi and __eoi cookies are kept for up to 13 months, and Google may also use ad cookies on its own domains.

Universities in zhongshan