Just some stats:
To prevent possible accidents, China's Regulations on Religious Affairs,
which was promulgated in 2004, stipulates that all outbound pilgrimage
activities of Chinese Muslims should be organized by the national Islamic
association, referring to the IAC.
China has more than 20 million Muslims, mainly living in Xinjiang,
Qinghai, Ganshu, Ningxia, Yunnan, Shaanxi, Inner Mongolia and Henan. Starting in
1985, nearly 100,000 Muslims have fulfilled their pilgrimages.