The UN rights envoy on Saturday said her contentious visit toChina was “not an investigation”, and insisted she had unsupervised access during meetings in Xinjiang, where Beijing is accused of widespread human rights abuses. Michelle Bachelet’s long-planned trip this week has taken her to the far-western region, where Beijing is accused of the detention of over a million Uyghurs and other Muslim minorities, forced sterilisation of women and coerced labour. The United States has labelled China’s actions in Xinjiang a “genocide” and “crimes against humanity”, allegations vehemently denied by Bei…