to protecting citizens' personal information and curbing the spread of detrimental information". In 2018, during the Saga Dawa, the holy fourth month for Tibetan Buddhists, the government enforced stricter rules in Lhasa, according to the Global Times. People were also discouraged from engaging in religious practices in this month. When they did, they were supervised closely. As a method of protesting, some Tibetans have engaged in immolation, which is a tradition of protest against Chinese control that was first practiced in the mid-20th century. Xinjiang In Xinjiang and especially its capital city, Ürümqi, there are security checkpoints and identification stations almost everywhere. People need to show their ID cards and have their faces scanned by cameras at a security station before entering a supermarket, a hotel, a train station, a highway station, or other public place. The ratio of police officers stationed in Xinjiang to population is higher than elsewhere. This strict enforcement of security checks is partly a response to the separatist movement in 2009 associated with Uyghurs. Additionally, the cameras on streets are denser there than elsewhere, numbering 40,000. The information collected by the cameras is matched with individual profiles, which include previously collected biometric data, such as DNA samples and voice samples. People are rated on a level of trustworthiness based on their profiles, which also takes into account their familial relations and social connections. These levels include "trustworthy", "average", and "untrustworthy". The data is fed into the Integrated Joint Operations Platform (), an AI-powered system used for mass surveillance which generates lists of suspects for detention. Xinjiang residents, especially those from the Uyghur ethnic group, are not allowed to practice certain religious acts. They are also more actively and strictly monitored by surveillance apps, voice printing, and facial recognition cameras. Since 2017, the government has set up internment camps in Xinjiang to force citizens into compliance. People in the re-education camps are usually closely watched by guards and are not allowed to contact others outside the facilities, including family members and other close relations. They learn about Mandarin Chinese characters and the rules that they need to follow in those camps as well as outside once they leave. The security spending in Xinjiang ballooned in 2017, witnessing an increase of 90% to $8.52 billion as compared to that in 2016. Since at least 2017, Chinese police have forced Uyghurs in Xinjiang to install the Jingwang Weishi